Hi @antiquark, this may not solve all your problems, I'm not sure what you're trying to do. But I think it solves the problem you mention in your post. Look inside at the custom block "check for possible words" in the sprite "hitbox". I left some comments.
Original instructions: I'm trying to make a game sort of thing based on that thing you do where you have to change one letter at a time of a word and get it to be another word, but there is a bug where once you've clicked on one letter that letter is the only one you can change? I'd appreciate if someone with actual skills could help me. <3
