fixes #66580

src/vs/base/browser/ui/tree/abstractTree.ts

@@ -196,7 +196,7 @@ class TreeRenderer<T, TFilterData, TTemplateData> implements IListRenderer<ITree
 		this.renderedNodes.set(node, templateData);
 		this.renderedElements.set(node.element, node);
 
-		templateData.twistie.style.marginLeft = `${node.depth * 10}px`;
+		templateData.twistie.style.marginLeft = `${node.depth * 12}px`;
 		this.renderTwistie(node, templateData.twistie);
 
 		this.renderer.renderElement(node, index, templateData.templateData);

src/vs/base/browser/ui/tree/media/tree.css

@@ -29,7 +29,7 @@
 
 .monaco-tl-twistie.collapsible {
 	background-size: 16px;
-	background-position: 100% 50%;
+	background-position: 3px 50%;
 	background-repeat: no-repeat;
 	background-image: url("expanded.svg");
 }