Adding a comment shows up twice in the UI in VS Code (microsoft#186147)

Fixes microsoft#185644

Author: alexr00

src/vs/workbench/contrib/comments/browser/commentFormActions.ts

@@ -56,7 +56,7 @@ export class CommentFormActions implements IDisposable {
 			const lastAction = this._actions[0];
 
 			if (lastAction.enabled) {
-				this.actionHandler(lastAction);
+				return this.actionHandler(lastAction);
 			}
 		}
 	}

src/vs/workbench/contrib/comments/browser/commentReply.ts

@@ -165,7 +165,7 @@ export class CommentReply<T extends IRange | ICellRange> extends Disposable {
 	}
 
 	async submitComment(): Promise<void> {
-		this._commentFormActions?.triggerDefaultAction();
+		return this._commentFormActions?.triggerDefaultAction();
 	}
 
 	setCommentEditorDecorations() {
@@ -311,6 +311,7 @@ export class CommentReply<T extends IRange | ICellRange> extends Disposable {
 
 	private hideReplyArea() {
 		this.commentEditor.getDomNode()!.style.outline = '';
+		this.commentEditor.setValue('');
 		this._pendingComment = '';
 		this.form.classList.remove('expand');
 		this._error.textContent = '';

src/vs/workbench/contrib/comments/browser/commentThreadWidget.ts

@@ -296,9 +296,9 @@ export class CommentThreadWidget<T extends IRange | ICellRange = IRange> extends
 	async submitComment() {
 		const activeComment = this._body.activeComment;
 		if (activeComment) {
-			activeComment.submitComment();
+			return activeComment.submitComment();
 		} else if ((this._commentReply?.getPendingComment()?.length ?? 0) > 0) {
-			this._commentReply?.submitComment();
+			return this._commentReply?.submitComment();
 		}
 	}
 

src/vs/workbench/contrib/comments/browser/commentThreadZoneWidget.ts

@@ -413,7 +413,7 @@ export class ReviewZoneWidget extends ZoneWidget implements ICommentThreadWidget
 	}
 
 	async submitComment(): Promise<void> {
-		this._commentThreadWidget.submitComment();
+		return this._commentThreadWidget.submitComment();
 	}
 
 	_refresh(dimensions: dom.Dimension) {