when misclicked the dot will fill in squares with x-s but I can't undo those x anymore without filling everything with it :(
Thank you, that is very helpful to know!
Good news — this is fixed in the current build: long-press any cell to undo your last mark, which reverts a misclicked dot and all the ✕'s it auto-filled in one go. Thanks for the report!
It works wonderfully along with the scrolling. Thank you!