"Are you sure you want to leave this page" is only asked once on the editor screen.

"Are you sure you want to leave this page" is only asked once while on the editor screen. If you say no, then trigger something else that causes a page change then your content gets lost.

This is especially annoying because I found it on a blog post which doesn't have drafts. Also especially annoying because I found it by using command-left arrow which should move the caret to the beginning of the line in text inputs but for some reason does the browser native back navigation instead while the editor.