I believe, the annoyingness depends on the implementation. I dislike it when gmail asks for confirmation out of the blue, when I don’t even type anything, but I’m also grateful for the pages that do it right.
As for autosaving, this would be even better. As far as I know, firefox does it by itself for simple input
s, but it’s not the case for itch. If itch could save your work in progress as drafts, the problem would be solved.
And, of course, I can fix it on my side, no big deal. I just figured that this may also be the problem for anyone who may close the tab unwillingly e. g. as the result of a power cut or a browser crash or by hitting the wrong key combination.