diff --git a/app/src/dialog/message.ts b/app/src/dialog/message.ts
index 6e508d384..7addfc497 100644
--- a/app/src/dialog/message.ts
+++ b/app/src/dialog/message.ts
@@ -97,6 +97,7 @@ export const hideMessage = (id?: string) => {
         const messageElement = messagesElement.querySelector(`[data-id="${id}"]`);
         if (messageElement) {
             messageElement.classList.add("b3-snackbar--hide");
+            window.clearTimeout(parseInt(messageElement.getAttribute("data-timeoutid")));
             setTimeout(() => {
                 messageElement.remove();
                 if (messagesElement.childElementCount === 0) {
diff --git a/app/src/protyle/ui/initUI.ts b/app/src/protyle/ui/initUI.ts
index 43d7bfde9..572a51bca 100644
--- a/app/src/protyle/ui/initUI.ts
+++ b/app/src/protyle/ui/initUI.ts
@@ -80,7 +80,7 @@ export const initUI = (protyle: IProtyle) => {
             protyle.wysiwyg.element.querySelectorAll(".code-block .protyle-linenumber__rows").forEach((block: HTMLElement) => {
                 lineNumberRender(block.parentElement);
             });
-            document.querySelector(`#message [data-id="${wheelId}"] button`).addEventListener("click", () => {
+            document.querySelector(`#message [data-id="${wheelId}"] button`)?.addEventListener("click", () => {
                 window.siyuan.config.editor.fontSize = 16;
                 setInlineStyle();
                 fetchPost("/api/setting/setEditor", window.siyuan.config.editor);