diff --git a/packages/core/src/browser/shell/tab-bars.ts b/packages/core/src/browser/shell/tab-bars.ts
index 8bb9cd292082e..13980be53718f 100644
--- a/packages/core/src/browser/shell/tab-bars.ts
+++ b/packages/core/src/browser/shell/tab-bars.ts
@@ -619,7 +619,7 @@ export class TabBarRenderer extends TabBar.Renderer {
                         cssClasses: ['extended-tab-preview'],
                         visualPreview: this.corePreferences?.['window.tabbar.enhancedPreview'] === 'visual' ? width => this.renderVisualPreview(width, title) : undefined
                     });
-                } else {
+                } else if (title.caption) {
                     this.hoverService.requestHover({
                         content: title.caption,
                         target: event.currentTarget,
diff --git a/packages/preferences/src/browser/views/preference-widget.tsx b/packages/preferences/src/browser/views/preference-widget.tsx
index 709e29a2a9fcf..631bdf478217e 100644
--- a/packages/preferences/src/browser/views/preference-widget.tsx
+++ b/packages/preferences/src/browser/views/preference-widget.tsx
@@ -78,6 +78,7 @@ export class PreferencesWidget extends Panel implements StatefulWidget {
     protected init(): void {
         this.id = PreferencesWidget.ID;
         this.title.label = PreferencesWidget.LABEL;
+        this.title.caption = PreferencesWidget.LABEL;
         this.title.closable = true;
         this.addClass('theia-settings-container');
         this.title.iconClass = codicon('settings');