fix from merge and make titlebar position more reliable

src/vs/code/electron-main/menubar.ts

@@ -515,7 +515,7 @@ export class Menubar {
 		let label: string;
 		let path: string;
 		if (isSingleFolderWorkspaceIdentifier(workspace) || typeof workspace === 'string') {
-			label = unmnemonicLabel(getPathLabel(workspace, null, this.environmentService));
+			label = unmnemonicLabel(getPathLabel(workspace, this.environmentService, null));
 			path = workspace;
 		} else {
 			label = getWorkspaceLabel(workspace, this.environmentService, { verbose: true });

src/vs/workbench/browser/parts/titlebar/media/titlebarpart.css

@@ -44,7 +44,7 @@
 	text-align: center;
 	padding-right: 150px;
 	padding-left: 150px;
-	position: fixed;
+	position: absolute;
 	margin: 1px 2px;
 	width: 100%;
 	left: calc(-100vw + 100%);