diff --git a/airflow-core/src/airflow/ui/src/layouts/Details/Grid/GridTI.tsx b/airflow-core/src/airflow/ui/src/layouts/Details/Grid/GridTI.tsx
index 0fabe1cf89a90..e49fed90de66a 100644
--- a/airflow-core/src/airflow/ui/src/layouts/Details/Grid/GridTI.tsx
+++ b/airflow-core/src/airflow/ui/src/layouts/Details/Grid/GridTI.tsx
@@ -143,7 +143,7 @@ const Instance = ({ dagId, instance, isGroup, isMapped, runId, search, taskId }:
             position="absolute"
             right={0}
             visibility="hidden"
-            zIndex={1}
+            zIndex="tooltip"
           >
             {translate("taskId")}: {taskId}
             <br />