The commit box lets go when you post
Your draft now disappears the moment the server accepts it, even when a background refresh steals the receipt. Post from the main box or a quote and you get a clean slate back.
You type a commit, tap the shortcut, and watch the page refresh. Where your text used to sit there after a stray poll swallowed the confirmation, the box now comes back empty. Images are cleared, the poll is removed, the schedule is reset, and the cursor blinks in a fresh field. Quote someone and the little dialog closes behind you.
Credit goes to hbenabdallah, who flipped the test both composers run on the server's reply. They used to wait for a committed or scheduled receipt. Now they clear unless the reply carries an error notice. Only two rejections still redirect back, the 10-commits-a-minute limit and an expired page, and both flash that error. So the ordinary lost-flash case stops stranding your draft.
One catch. If a rejection loses its own error notice to the same race, say a 30-second poll grabs it first, the box clears anyway and your words are gone. The window is narrow, but it is there.