From 973e3716ba1f9230fbab40b7b5960ca4f8a6386c Mon Sep 17 00:00:00 2001
From: Kazuki Nagasawa <113568707+crafkaz@users.noreply.github.com>
Date: Mon, 14 Sep 2026 08:18:44 +0000
Subject: [PATCH] Fix missing confirmation when leaving with an unsent post
 (#40478)

---
 app/javascript/mastodon/features/compose/index.tsx | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/app/javascript/mastodon/features/compose/index.tsx b/app/javascript/mastodon/features/compose/index.tsx
index 8d9dc68cbee..137a27fe734 100644
--- a/app/javascript/mastodon/features/compose/index.tsx
+++ b/app/javascript/mastodon/features/compose/index.tsx
@@ -17,7 +17,11 @@ import MenuIcon from '@/material-icons/400-24px/menu.svg?react';
 import NotificationsIcon from '@/material-icons/400-24px/notifications-fill.svg?react';
 import PublicIcon from '@/material-icons/400-24px/public.svg?react';
 import SettingsIcon from '@/material-icons/400-24px/settings.svg?react';
-import { mountCompose, unmountCompose } from 'mastodon/actions/compose';
+import {
+  changeComposing,
+  mountCompose,
+  unmountCompose,
+} from 'mastodon/actions/compose';
 import { openModal } from 'mastodon/actions/modal';
 import { Column } from 'mastodon/components/column';
 import { ColumnHeader } from 'mastodon/components/column_header';
@@ -63,6 +67,10 @@ const Compose: React.FC<{ multiColumn: boolean }> = ({ multiColumn }) => {
     };
   }, [dispatch]);
 
+  const handleFocus = useCallback(() => {
+    dispatch(changeComposing(true));
+  }, [dispatch]);
+
   const handleLogoutClick = useCallback(
     (e: React.MouseEvent) => {
       e.preventDefault();
@@ -164,7 +172,7 @@ const Compose: React.FC<{ multiColumn: boolean }> = ({ multiColumn }) => {
           role='region'
           aria-label={intl.formatMessage(navbarMessages.publish)}
         >
-          <div className='drawer__inner'>
+          <div className='drawer__inner' onFocus={handleFocus}>
             <ComposeFormContainer />
 
             <div className='drawer__inner__mastodon with-zig-zag-decoration'>