tangled.org has potential.

Pre-update, code review UI was horrific compared to GitHub. Post-update, code review is much better, but "Comments" section without a "Comment" button is unforgivable. People are probably closing PRs right and left without knowing it. Shift-Enter is a submit action.

I'm a keyboard-first user, but for something which can end up in somebody's inbox notifications, UI button is the way to go.

I just don't understand how such a prolific pattern is being ignored.