From 5ee4d904302518e3c73c140be65c33f59ab525e4 Mon Sep 17 00:00:00 2001
From: Alex Ross <alros@microsoft.com>
Date: Thu, 30 May 2024 15:30:04 +0200
Subject: [PATCH] Only fire collapsible change event if actually changed.

---
 src/vs/workbench/api/browser/mainThreadComments.ts | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/vs/workbench/api/browser/mainThreadComments.ts b/src/vs/workbench/api/browser/mainThreadComments.ts
index d5e11a86dc1da..4eb6385cbed35 100644
--- a/src/vs/workbench/api/browser/mainThreadComments.ts
+++ b/src/vs/workbench/api/browser/mainThreadComments.ts
@@ -109,8 +109,10 @@ export class MainThreadCommentThread<T> implements languages.CommentThread<T> {
 	}
 
 	set collapsibleState(newState: languages.CommentThreadCollapsibleState | undefined) {
-		this._collapsibleState = newState;
-		this._onDidChangeCollapsibleState.fire(this._collapsibleState);
+		if (newState !== this._collapsibleState) {
+			this._collapsibleState = newState;
+			this._onDidChangeCollapsibleState.fire(this._collapsibleState);
+		}
 	}
 
 	private _initialCollapsibleState: languages.CommentThreadCollapsibleState | undefined;