diff --git a/src/vs/workbench/contrib/notebook/browser/contrib/notebookVariables/notebookVariablesTree.ts b/src/vs/workbench/contrib/notebook/browser/contrib/notebookVariables/notebookVariablesTree.ts
index c643cda1c6502..8427a77a9f1b6 100644
--- a/src/vs/workbench/contrib/notebook/browser/contrib/notebookVariables/notebookVariablesTree.ts
+++ b/src/vs/workbench/contrib/notebook/browser/contrib/notebookVariables/notebookVariablesTree.ts
@@ -31,14 +31,16 @@ export class NotebookVariablesDelegate implements IListVirtualDelegate<IVariable
 	}
 
 	getTemplateId(element: IVariableTreeElement): string {
-		return 'variableElement';
+		return NotebookVariableRenderer.ID;
 	}
 }
 
 export class NotebookVariableRenderer implements ITreeRenderer<IVariableTreeElement, FuzzyScore, { container: HTMLElement }> {
 
+	static readonly ID = 'variableElement';
+
 	get templateId(): string {
-		return 'variableElement';
+		return NotebookVariableRenderer.ID;
 	}
 
 	renderTemplate(container: HTMLElement) {
diff --git a/src/vs/workbench/contrib/notebook/browser/contrib/notebookVariables/notebookVariablesView.ts b/src/vs/workbench/contrib/notebook/browser/contrib/notebookVariables/notebookVariablesView.ts
index 14dd4f69c2324..e439fc88239b1 100644
--- a/src/vs/workbench/contrib/notebook/browser/contrib/notebookVariables/notebookVariablesView.ts
+++ b/src/vs/workbench/contrib/notebook/browser/contrib/notebookVariables/notebookVariablesView.ts
@@ -51,6 +51,8 @@ export class NotebookVariablesView extends ViewPane {
 	}
 
 	public override renderBody(container: HTMLElement): void {
+		super.renderBody(container);
+
 		this.tree = this.instantiationService.createInstance(NotebookVariablesTree, 'notebookVariablesView', container,
 			new NotebookVariablesDelegate(),
 			[new NotebookVariableRenderer()],