diff --git a/src/@types/vscode.proposed.chatParticipantAdditions.d.ts b/src/@types/vscode.proposed.chatParticipantAdditions.d.ts
index 71520fa1ec..aa7001a3d2 100644
--- a/src/@types/vscode.proposed.chatParticipantAdditions.d.ts
+++ b/src/@types/vscode.proposed.chatParticipantAdditions.d.ts
@@ -105,6 +105,7 @@ declare module 'vscode' {
 		isComplete?: boolean;
 		toolSpecificData?: ChatTerminalToolInvocationData;
 		fromSubAgent?: boolean;
+		presentation?: 'hidden' | 'hiddenAfterComplete' | undefined;
 
 		constructor(toolName: string, toolCallId: string, isError?: boolean);
 	}
diff --git a/src/view/pullRequestCommentController.ts b/src/view/pullRequestCommentController.ts
index 3823de2c6d..e60677266d 100644
--- a/src/view/pullRequestCommentController.ts
+++ b/src/view/pullRequestCommentController.ts
@@ -12,7 +12,7 @@ import { disposeAll } from '../common/lifecycle';
 import Logger from '../common/logger';
 import { ITelemetry } from '../common/telemetry';
 import { fromPRUri, Schemes } from '../common/uri';
-import { groupBy } from '../common/utils';
+import { formatError, groupBy } from '../common/utils';
 import { PULL_REQUEST_OVERVIEW_VIEW_TYPE } from '../common/webview';
 import { FolderRepositoryManager } from '../github/folderRepositoryManager';
 import { GitHubRepository } from '../github/githubRepository';
@@ -546,14 +546,25 @@ export class PullRequestCommentController extends CommentControllerBase implemen
 			return;
 		}
 
-		if (
-			comment.reactions &&
-			!comment.reactions.find(ret => ret.label === reaction.label && !!ret.authorHasReacted)
-		) {
-			// add reaction
-			await this.pullRequestModel.addCommentReaction(comment.rawComment.graphNodeId, reaction);
-		} else {
-			await this.pullRequestModel.deleteCommentReaction(comment.rawComment.graphNodeId, reaction);
+		try {
+			if (
+				comment.reactions &&
+				!comment.reactions.find(ret => ret.label === reaction.label && !!ret.authorHasReacted)
+			) {
+				// add reaction
+				await this.pullRequestModel.addCommentReaction(comment.rawComment.graphNodeId, reaction);
+			} else {
+				await this.pullRequestModel.deleteCommentReaction(comment.rawComment.graphNodeId, reaction);
+			}
+		} catch (e) {
+			// Ignore permission errors when removing reactions due to race conditions
+			// See: https://github.com/microsoft/vscode/issues/69321
+			const errorMessage = formatError(e);
+			if (errorMessage.includes('does not have the correct permissions to execute `RemoveReaction`')) {
+				// Silently ignore this error - it occurs when quickly toggling reactions
+				return;
+			}
+			throw new Error(errorMessage);
 		}
 	}
 
diff --git a/src/view/reviewCommentController.ts b/src/view/reviewCommentController.ts
index 51fe26df56..4c4c7fe090 100644
--- a/src/view/reviewCommentController.ts
+++ b/src/view/reviewCommentController.ts
@@ -985,7 +985,14 @@ ${suggestionInformation.suggestionContent}
 				);
 			}
 		} catch (e) {
-			throw new Error(formatError(e));
+			// Ignore permission errors when removing reactions due to race conditions
+			// See: https://github.com/microsoft/vscode/issues/69321
+			const errorMessage = formatError(e);
+			if (errorMessage.includes('does not have the correct permissions to execute `RemoveReaction`')) {
+				// Silently ignore this error - it occurs when quickly toggling reactions
+				return;
+			}
+			throw new Error(errorMessage);
 		}
 	}