diff --git a/apps/web/app/(all)/[workspaceSlug]/(projects)/layout.tsx b/apps/web/app/(all)/[workspaceSlug]/(projects)/layout.tsx
index 860242dc5bf..2a29a72c768 100644
--- a/apps/web/app/(all)/[workspaceSlug]/(projects)/layout.tsx
+++ b/apps/web/app/(all)/[workspaceSlug]/(projects)/layout.tsx
@@ -11,6 +11,7 @@ export default function WorkspaceLayout({ children }: { children: React.ReactNod
       <CommandPalette />
       <WorkspaceAuthWrapper>
         <div className="relative flex flex-col h-full w-full overflow-hidden rounded-lg border border-custom-border-200">
+          <div id="full-screen-portal" className="inset-0 absolute w-full" />
           <div className="relative flex size-full overflow-hidden">
             <ProjectAppSidebar />
             <main className="relative flex h-full w-full flex-col overflow-hidden bg-custom-background-100">
diff --git a/apps/web/core/components/analytics/work-items/modal/index.tsx b/apps/web/core/components/analytics/work-items/modal/index.tsx
index 78b07161ec4..06d09aa1e9b 100644
--- a/apps/web/core/components/analytics/work-items/modal/index.tsx
+++ b/apps/web/core/components/analytics/work-items/modal/index.tsx
@@ -1,8 +1,9 @@
 import React, { useEffect, useState } from "react";
 import { observer } from "mobx-react";
-import { Dialog, Transition } from "@headlessui/react";
 // plane package imports
+import { createPortal } from "react-dom";
 import { ICycle, IModule, IProject } from "@plane/types";
+import { cn } from "@plane/utils";
 import { useAnalytics } from "@/hooks/store";
 // plane web components
 import { WorkItemsModalMainContent } from "./content";
@@ -23,6 +24,7 @@ export const WorkItemsModal: React.FC<Props> = observer((props) => {
   const [fullScreen, setFullScreen] = useState(false);
 
   const handleClose = () => {
+    setFullScreen(false);
     onClose();
   };
 
@@ -30,50 +32,40 @@ export const WorkItemsModal: React.FC<Props> = observer((props) => {
     updateIsEpic(isEpic ?? false);
   }, [isEpic, updateIsEpic]);
 
-  return (
-    <Transition.Root appear show={isOpen} as={React.Fragment}>
-      <Dialog as="div" className="relative z-30" onClose={handleClose}>
-        <Transition.Child
-          as={React.Fragment}
-          enter="transition-transform duration-300"
-          enterFrom="translate-x-full"
-          enterTo="translate-x-0"
-          leave="transition-transform duration-200"
-          leaveFrom="translate-x-0"
-          leaveTo="translate-x-full"
+  const portalContainer = document.getElementById("full-screen-portal") as HTMLElement;
+
+  if (!isOpen) return null;
+
+  const content = (
+    <div className={cn("inset-0 z-[25] h-full w-full overflow-y-auto", fullScreen ? "absolute" : "fixed")}>
+      <div
+        className={`right-0 top-0 z-20 h-full bg-custom-background-100 shadow-custom-shadow-md ${
+          fullScreen ? "w-full p-2 absolute" : "w-full sm:w-full md:w-1/2 fixed"
+        }`}
+      >
+        <div
+          className={`flex h-full flex-col overflow-hidden border-custom-border-200 bg-custom-background-100 text-left ${
+            fullScreen ? "rounded-lg border" : "border-l"
+          }`}
         >
-          <div className="fixed inset-0 z-20 h-full w-full overflow-y-auto">
-            <Dialog.Panel>
-              <div
-                className={`fixed right-0 top-0 z-20 h-full bg-custom-background-100 shadow-custom-shadow-md ${
-                  fullScreen ? "w-full p-2" : "w-full sm:w-full md:w-1/2"
-                }`}
-              >
-                <div
-                  className={`flex h-full flex-col overflow-hidden border-custom-border-200 bg-custom-background-100 text-left ${
-                    fullScreen ? "rounded-lg border" : "border-l"
-                  }`}
-                >
-                  <WorkItemsModalHeader
-                    fullScreen={fullScreen}
-                    handleClose={handleClose}
-                    setFullScreen={setFullScreen}
-                    title={projectDetails?.name ?? ""}
-                    cycle={cycleDetails}
-                    module={moduleDetails}
-                  />
-                  <WorkItemsModalMainContent
-                    fullScreen={fullScreen}
-                    projectDetails={projectDetails}
-                    cycleDetails={cycleDetails}
-                    moduleDetails={moduleDetails}
-                  />
-                </div>
-              </div>
-            </Dialog.Panel>
-          </div>
-        </Transition.Child>
-      </Dialog>
-    </Transition.Root>
+          <WorkItemsModalHeader
+            fullScreen={fullScreen}
+            handleClose={handleClose}
+            setFullScreen={setFullScreen}
+            title={projectDetails?.name ?? ""}
+            cycle={cycleDetails}
+            module={moduleDetails}
+          />
+          <WorkItemsModalMainContent
+            fullScreen={fullScreen}
+            projectDetails={projectDetails}
+            cycleDetails={cycleDetails}
+            moduleDetails={moduleDetails}
+          />
+        </div>
+      </div>
+    </div>
   );
+
+  return fullScreen && portalContainer ? createPortal(content, portalContainer) : content;
 });
diff --git a/apps/web/core/components/gantt-chart/chart/root.tsx b/apps/web/core/components/gantt-chart/chart/root.tsx
index edc10ce52d7..11bc0ee5469 100644
--- a/apps/web/core/components/gantt-chart/chart/root.tsx
+++ b/apps/web/core/components/gantt-chart/chart/root.tsx
@@ -1,4 +1,5 @@
 import { FC, useEffect, useState } from "react";
+import { createPortal } from "react-dom";
 import { observer } from "mobx-react";
 // plane imports
 // components
@@ -176,10 +177,12 @@ export const ChartViewRoot: FC<ChartViewRootProps> = observer((props) => {
     scrollContainer.scrollLeft = scrollWidth;
   };
 
-  return (
+  const portalContainer = document.getElementById("full-screen-portal") as HTMLElement;
+
+  const content = (
     <div
       className={cn("relative flex flex-col h-full select-none rounded-sm bg-custom-background-100 shadow", {
-        "fixed inset-0 z-30 bg-custom-background-100": fullScreenMode,
+        "inset-0 z-[25] bg-custom-background-100": fullScreenMode,
         "border-[0.5px] border-custom-border-200": border,
       })}
     >
@@ -217,4 +220,6 @@ export const ChartViewRoot: FC<ChartViewRootProps> = observer((props) => {
       />
     </div>
   );
+
+  return fullScreenMode && portalContainer ? createPortal(content, portalContainer) : content;
 });
diff --git a/apps/web/core/components/issues/peek-overview/view.tsx b/apps/web/core/components/issues/peek-overview/view.tsx
index c30a40fb54c..8e2c1e20072 100644
--- a/apps/web/core/components/issues/peek-overview/view.tsx
+++ b/apps/web/core/components/issues/peek-overview/view.tsx
@@ -23,6 +23,7 @@ import useKeypress from "@/hooks/use-keypress";
 import usePeekOverviewOutsideClickDetector from "@/hooks/use-peek-overview-outside-click";
 // store hooks
 import { IssueActivity } from "../issue-detail/issue-activity";
+import { createPortal } from "react-dom";
 
 interface IIssueView {
   workspaceSlug: string;
@@ -108,15 +109,151 @@ export const IssueView: FC<IIssueView> = observer((props) => {
 
   const peekOverviewIssueClassName = cn(
     !embedIssue
-      ? "fixed z-20 flex flex-col overflow-hidden rounded border border-custom-border-200 bg-custom-background-100 transition-all duration-300"
+      ? "fixed z-[25] flex flex-col overflow-hidden rounded border border-custom-border-200 bg-custom-background-100 transition-all duration-300"
       : `w-full h-full`,
     !embedIssue && {
       "bottom-0 right-0 top-0 w-full md:w-[50%] border-0 border-l": peekMode === "side-peek",
       "size-5/6 top-[8.33%] left-[8.33%]": peekMode === "modal",
-      "inset-0 m-4": peekMode === "full-screen",
+      "inset-0 m-4 absolute": peekMode === "full-screen",
     }
   );
 
+  const shouldUsePortal = !embedIssue && peekMode === "full-screen";
+
+  const portalContainer = document.getElementById("full-screen-portal") as HTMLElement;
+
+  const content = (
+    <div className="w-full !text-base">
+      {issueId && (
+        <div
+          ref={issuePeekOverviewRef}
+          className={peekOverviewIssueClassName}
+          style={{
+            boxShadow:
+              "0px 4px 8px 0px rgba(0, 0, 0, 0.12), 0px 6px 12px 0px rgba(16, 24, 40, 0.12), 0px 1px 16px 0px rgba(16, 24, 40, 0.12)",
+          }}
+        >
+          {isError ? (
+            <div className="relative h-screen w-full overflow-hidden">
+              <IssuePeekOverviewError removeRoutePeekId={removeRoutePeekId} />
+            </div>
+          ) : (
+            isLoading && <IssuePeekOverviewLoader removeRoutePeekId={removeRoutePeekId} />
+          )}
+          {!isLoading && !isError && issue && (
+            <>
+              {/* header */}
+              <IssuePeekOverviewHeader
+                peekMode={peekMode}
+                setPeekMode={(value) => setPeekMode(value)}
+                removeRoutePeekId={removeRoutePeekId}
+                toggleDeleteIssueModal={toggleDeleteIssueModal}
+                toggleArchiveIssueModal={toggleArchiveIssueModal}
+                handleRestoreIssue={handleRestore}
+                isArchived={is_archived}
+                issueId={issueId}
+                workspaceSlug={workspaceSlug}
+                projectId={projectId}
+                isSubmitting={isSubmitting}
+                disabled={disabled}
+                embedIssue={embedIssue}
+              />
+              {/* content */}
+              <div className="vertical-scrollbar scrollbar-md relative h-full w-full overflow-hidden overflow-y-auto">
+                {["side-peek", "modal"].includes(peekMode) ? (
+                  <div className="relative flex flex-col gap-3 px-8 py-5 space-y-3">
+                    <PeekOverviewIssueDetails
+                      workspaceSlug={workspaceSlug}
+                      projectId={projectId}
+                      issueId={issueId}
+                      issueOperations={issueOperations}
+                      disabled={disabled || isLocalDBIssueDescription}
+                      isArchived={is_archived}
+                      isSubmitting={isSubmitting}
+                      setIsSubmitting={(value) => setIsSubmitting(value)}
+                    />
+
+                    <div className="py-2">
+                      <IssueDetailWidgets
+                        workspaceSlug={workspaceSlug}
+                        projectId={projectId}
+                        issueId={issueId}
+                        disabled={disabled || is_archived}
+                        issueServiceType={EIssueServiceType.ISSUES}
+                      />
+                    </div>
+
+                    <PeekOverviewProperties
+                      workspaceSlug={workspaceSlug}
+                      projectId={projectId}
+                      issueId={issueId}
+                      issueOperations={issueOperations}
+                      disabled={disabled || is_archived}
+                    />
+
+                    <IssueActivity
+                      workspaceSlug={workspaceSlug}
+                      projectId={projectId}
+                      issueId={issueId}
+                      disabled={is_archived}
+                    />
+                  </div>
+                ) : (
+                  <div className="vertical-scrollbar flex h-full w-full overflow-auto">
+                    <div className="relative h-full w-full space-y-6 overflow-auto p-4 py-5">
+                      <div className="space-y-3">
+                        <PeekOverviewIssueDetails
+                          workspaceSlug={workspaceSlug}
+                          projectId={projectId}
+                          issueId={issueId}
+                          issueOperations={issueOperations}
+                          disabled={disabled || isLocalDBIssueDescription}
+                          isArchived={is_archived}
+                          isSubmitting={isSubmitting}
+                          setIsSubmitting={(value) => setIsSubmitting(value)}
+                        />
+
+                        <div className="py-2">
+                          <IssueDetailWidgets
+                            workspaceSlug={workspaceSlug}
+                            projectId={projectId}
+                            issueId={issueId}
+                            disabled={disabled}
+                            issueServiceType={EIssueServiceType.ISSUES}
+                          />
+                        </div>
+
+                        <IssueActivity
+                          workspaceSlug={workspaceSlug}
+                          projectId={projectId}
+                          issueId={issueId}
+                          disabled={is_archived}
+                        />
+                      </div>
+                    </div>
+                    <div
+                      className={`h-full !w-[400px] flex-shrink-0 border-l border-custom-border-200 p-4 py-5 overflow-hidden vertical-scrollbar scrollbar-sm ${
+                        is_archived ? "pointer-events-none" : ""
+                      }`}
+                    >
+                      <PeekOverviewProperties
+                        workspaceSlug={workspaceSlug}
+                        projectId={projectId}
+                        issueId={issueId}
+                        issueOperations={issueOperations}
+                        disabled={disabled || is_archived}
+                      />
+                    </div>
+                  </div>
+                )}
+              </div>
+            </>
+          )}
+        </div>
+      )}
+    </div>
+  );
+
   return (
     <>
       {issue && !is_archived && (
@@ -142,135 +279,7 @@ export const IssueView: FC<IIssueView> = observer((props) => {
         />
       )}
 
-      <div className="w-full !text-base">
-        {issueId && (
-          <div
-            ref={issuePeekOverviewRef}
-            className={peekOverviewIssueClassName}
-            style={{
-              boxShadow:
-                "0px 4px 8px 0px rgba(0, 0, 0, 0.12), 0px 6px 12px 0px rgba(16, 24, 40, 0.12), 0px 1px 16px 0px rgba(16, 24, 40, 0.12)",
-            }}
-          >
-            {isError ? (
-              <div className="relative h-screen w-full overflow-hidden">
-                <IssuePeekOverviewError removeRoutePeekId={removeRoutePeekId} />
-              </div>
-            ) : (
-              isLoading && <IssuePeekOverviewLoader removeRoutePeekId={removeRoutePeekId} />
-            )}
-            {!isLoading && !isError && issue && (
-              <>
-                {/* header */}
-                <IssuePeekOverviewHeader
-                  peekMode={peekMode}
-                  setPeekMode={(value) => setPeekMode(value)}
-                  removeRoutePeekId={removeRoutePeekId}
-                  toggleDeleteIssueModal={toggleDeleteIssueModal}
-                  toggleArchiveIssueModal={toggleArchiveIssueModal}
-                  handleRestoreIssue={handleRestore}
-                  isArchived={is_archived}
-                  issueId={issueId}
-                  workspaceSlug={workspaceSlug}
-                  projectId={projectId}
-                  isSubmitting={isSubmitting}
-                  disabled={disabled}
-                  embedIssue={embedIssue}
-                />
-                {/* content */}
-                <div className="vertical-scrollbar scrollbar-md relative h-full w-full overflow-hidden overflow-y-auto">
-                  {["side-peek", "modal"].includes(peekMode) ? (
-                    <div className="relative flex flex-col gap-3 px-8 py-5 space-y-3">
-                      <PeekOverviewIssueDetails
-                        workspaceSlug={workspaceSlug}
-                        projectId={projectId}
-                        issueId={issueId}
-                        issueOperations={issueOperations}
-                        disabled={disabled || isLocalDBIssueDescription}
-                        isArchived={is_archived}
-                        isSubmitting={isSubmitting}
-                        setIsSubmitting={(value) => setIsSubmitting(value)}
-                      />
-
-                      <div className="py-2">
-                        <IssueDetailWidgets
-                          workspaceSlug={workspaceSlug}
-                          projectId={projectId}
-                          issueId={issueId}
-                          disabled={disabled || is_archived}
-                          issueServiceType={EIssueServiceType.ISSUES}
-                        />
-                      </div>
-
-                      <PeekOverviewProperties
-                        workspaceSlug={workspaceSlug}
-                        projectId={projectId}
-                        issueId={issueId}
-                        issueOperations={issueOperations}
-                        disabled={disabled || is_archived}
-                      />
-
-                      <IssueActivity
-                        workspaceSlug={workspaceSlug}
-                        projectId={projectId}
-                        issueId={issueId}
-                        disabled={is_archived}
-                      />
-                    </div>
-                  ) : (
-                    <div className="vertical-scrollbar flex h-full w-full overflow-auto">
-                      <div className="relative h-full w-full space-y-6 overflow-auto p-4 py-5">
-                        <div className="space-y-3">
-                          <PeekOverviewIssueDetails
-                            workspaceSlug={workspaceSlug}
-                            projectId={projectId}
-                            issueId={issueId}
-                            issueOperations={issueOperations}
-                            disabled={disabled || isLocalDBIssueDescription}
-                            isArchived={is_archived}
-                            isSubmitting={isSubmitting}
-                            setIsSubmitting={(value) => setIsSubmitting(value)}
-                          />
-
-                          <div className="py-2">
-                            <IssueDetailWidgets
-                              workspaceSlug={workspaceSlug}
-                              projectId={projectId}
-                              issueId={issueId}
-                              disabled={disabled}
-                              issueServiceType={EIssueServiceType.ISSUES}
-                            />
-                          </div>
-
-                          <IssueActivity
-                            workspaceSlug={workspaceSlug}
-                            projectId={projectId}
-                            issueId={issueId}
-                            disabled={is_archived}
-                          />
-                        </div>
-                      </div>
-                      <div
-                        className={`h-full !w-[400px] flex-shrink-0 border-l border-custom-border-200 p-4 py-5 overflow-hidden vertical-scrollbar scrollbar-sm ${
-                          is_archived ? "pointer-events-none" : ""
-                        }`}
-                      >
-                        <PeekOverviewProperties
-                          workspaceSlug={workspaceSlug}
-                          projectId={projectId}
-                          issueId={issueId}
-                          issueOperations={issueOperations}
-                          disabled={disabled || is_archived}
-                        />
-                      </div>
-                    </div>
-                  )}
-                </div>
-              </>
-            )}
-          </div>
-        )}
-      </div>
+      {shouldUsePortal && portalContainer ? createPortal(content, portalContainer) : content}
     </>
   );
 });