That's what I try to avoid, if I have something to tweak I do it on StackEdit.io and repaste on stackit, it takes a little discipline but it makes things easier to keep track of, and that way I also have a complete copy of all my posts in case I need to copy or quote things from one post to a new one. I do agree that a confirm for clear would be desirable as well, but in the meantime, no editing in stackit for me.