diff --git a/app/src/protyle/toolbar/index.ts b/app/src/protyle/toolbar/index.ts
index f9dff97c2..02d66eb03 100644
--- a/app/src/protyle/toolbar/index.ts
+++ b/app/src/protyle/toolbar/index.ts
@@ -517,7 +517,8 @@ export class Toolbar {
             const currentNewNode = newNodes[i] as HTMLElement;
             const nextNewNode = newNodes[i + 1] as HTMLElement;
             if (currentNewNode.nodeType !== 3 && nextNewNode && nextNewNode.nodeType !== 3 &&
-                isArrayEqual(nextNewNode.getAttribute("data-type").split(" "), currentNewNode.getAttribute("data-type").split(" ")) &&
+                nextNewNode.tagName === currentNewNode.tagName &&
+                isArrayEqual((nextNewNode.getAttribute("data-type") || "").split(" "), (currentNewNode.getAttribute("data-type") || "").split(" ")) &&
                 currentNewNode.getAttribute("data-id") === nextNewNode.getAttribute("data-id") &&
                 currentNewNode.getAttribute("data-subtype") === nextNewNode.getAttribute("data-subtype") &&
                 currentNewNode.style.color === nextNewNode.style.color &&