better fix for #53459

src/vs/workbench/browser/layout.ts

@@ -219,7 +219,7 @@ export class WorkbenchLayout extends Disposable implements IVerticalSashLayoutPr
 	}
 
 	@memoize
-	private get partLayoutInfo() {
+	public get partLayoutInfo() {
 		return {
 			titlebar: {
 				height: TITLE_BAR_HEIGHT

src/vs/workbench/electron-browser/workbench.ts

@@ -1205,7 +1205,7 @@ export class Workbench extends Disposable implements IPartService {
 	getTitleBarOffset(): number {
 		let offset = 0;
 		if (this.isVisible(Parts.TITLEBAR_PART)) {
-			offset = this.getContainer(Parts.TITLEBAR_PART).getBoundingClientRect().height;
+			offset = this.workbenchLayout.partLayoutInfo.titlebar.height;
 		}
 
 		return offset;