diff --git a/packages/debug/src/browser/view/debug-configuration-widget.tsx b/packages/debug/src/browser/view/debug-configuration-widget.tsx
index 925599815debf..d6929324cf48e 100644
--- a/packages/debug/src/browser/view/debug-configuration-widget.tsx
+++ b/packages/debug/src/browser/view/debug-configuration-widget.tsx
@@ -51,6 +51,7 @@ export class DebugConfigurationWidget extends ReactWidget {
         this.toDispose.push(this.manager.onDidChange(() => this.update()));
         this.toDispose.push(this.workspaceService.onWorkspaceChanged(() => this.update()));
         this.toDispose.push(this.workspaceService.onWorkspaceLocationChanged(() => this.update()));
+        this.scrollOptions = undefined;
         this.update();
     }
 
diff --git a/packages/debug/src/browser/view/debug-toolbar-widget.tsx b/packages/debug/src/browser/view/debug-toolbar-widget.tsx
index 94173a51e82c5..b0cafb6b1bbc0 100644
--- a/packages/debug/src/browser/view/debug-toolbar-widget.tsx
+++ b/packages/debug/src/browser/view/debug-toolbar-widget.tsx
@@ -34,6 +34,7 @@ export class DebugToolBar extends ReactWidget {
         this.addClass('debug-toolbar');
         this.toDispose.push(this.model);
         this.toDispose.push(this.model.onDidChange(() => this.update()));
+        this.scrollOptions = undefined;
         this.update();
     }