I think this is the same bug as here... which was fixed at one point. I've noticed it happening again recently, but for me it happens more often when I'm at the office than when I'm at home which makes me think its a network issue of some sort. like a dropped packet or something, its like I press a key and the letter shows up on my end but the retool server didn't get the change so when the UI redraws it retrieves the code without the new letter effectively deleting what I type)