diff --git a/apps/ely-mark/src/export.rs b/apps/ely-mark/src/export.rs
index e99d776..afcb4bf 100644
--- a/apps/ely-mark/src/export.rs
+++ b/apps/ely-mark/src/export.rs
@@ -125,32 +125,27 @@ impl Desk {
         let dir = ely_office::folder(tab).unwrap_or_else(std::env::temp_dir);
         let chosen = cx.prompt_for_new_path(&dir, Some(&format!("{stem}.{}", output.extension())));
         cx.spawn(async move |desk, cx| {
-            // A cancel says nothing; a panel that failed says why.
-            let failed = match chosen.await {
-                Ok(Ok(Some(path))) => Ok(path),
-                Ok(Ok(None)) => return log::info!("mark: the export panel was cancelled"),
+            let chosen = match chosen.await {
+                Ok(Ok(path)) => Ok(path),
                 Ok(Err(error)) => Err(error.to_string()),
                 Err(error) => Err(error.to_string()),
             };
-            let path = match failed {
-                Ok(path) => path,
-                Err(why) => {
-                    if desk.update(cx, |desk, cx| desk.panel_failed(&why, cx)).is_err() {
-                        log::error!("mark: the export panel failed after its window: {why}");
+            let done = desk.update(cx, |desk, cx| match chosen {
+                Ok(Some(path)) => {
+                    if let Err(error) = not_open(desk, &path) {
+                        return desk.exported(Err(error), cx);
+                    }
+                    match output {
+                        Output::Pdf => desk.render_pdf(id, Some(path), cx),
+                        _ => desk.write_output(id, output, path, cx),
                     }
-                    return;
                 }
-            };
-            desk.update(cx, |desk, cx| {
-                if let Err(error) = not_open(desk, &path) {
-                    return desk.exported(Err(error), cx);
-                }
-                match output {
-                    Output::Pdf => desk.render_pdf(id, Some(path), cx),
-                    _ => desk.write_output(id, output, path, cx),
-                }
-            })
-            .ok();
+                Ok(None) => log::info!("mark: the export panel was cancelled"),
+                Err(why) => desk.panel_failed(&why, cx),
+            });
+            if done.is_err() {
+                log::info!("mark: the window closed before the export panel");
+            }
         })
         .detach();
     }
diff --git a/tasks/BUGS.md b/tasks/BUGS.md
index aba3518..1946dc6 100644
--- a/tasks/BUGS.md
+++ b/tasks/BUGS.md
@@ -69,7 +69,7 @@
 - [x] M-06 `on_app_quit` 无条件删恢复点与崩溃锁，AppKit 直接终止时丢未保存内容 — 未保存时退出只放下锁、不清点，窗口释放时不再删（审查 1 轮）
 - [x] M-07 崩溃恢复的未命名副本按“第一个显示的未命名标签”配对，内容可能落错标签 — 未命名副本按新建时记下的标签号配对，经 Keeping::take（审查 2 轮）
 - [x] M-08 页面重载后悬着的渲染回调永不完成，导出既不成功也不报错 — 页面失败后挂起与新到的渲染都以错误结束，载入成功才恢复（审查 2 轮）
-- [ ] M-09 导出的保存面板出错被当作取消
+- [x] M-09 导出的保存面板出错被当作取消 — 面板出错走 panel_failed，取消只记日志（审查 1 轮）
 - [ ] M-10 关闭查找框只清当前标签的高亮
 - [ ] M-11 页面把搜索词写进应用日志
 - [ ] M-12 浏览器创建完成前 `WebView` 已释放，浏览器泄漏
diff --git a/tasks/reviews/M-09-r1.md b/tasks/reviews/M-09-r1.md
new file mode 100644
index 0000000..7ef22e9
--- /dev/null
+++ b/tasks/reviews/M-09-r1.md
@@ -0,0 +1 @@
+PASS