I’m using Firefox 65.0.1 on macOS, but my button looks like this when the focus is on it:

But highlighting it would not help in my situation. If this situation occurs, tab and space are so quickly pressed after each other that highlighting would not do anything.
There are a few ways to improve the situation.
- If cancel were the first button to focus, this would never happen. Instead a popup would show up with the typical
Are you sure you want to abandon your post?message. - An option in preferences to
- require
control+tabto jump out of the editor and focusReply. I’d rather be able to enter tabs in the editor anyway. - confirm sending the message (a similar popup like the one for canceling).
- choose the focus order (cancel, reply) or (reply, cancel)
- require