We discussed this in the past. I don't think it was ever added to Mantis or even here. This only happen when : 1- item is created 2- user starts typing fast and right after item creation. Here I loose 3-4 first characters: they're typed, then cursor moves back to the left, and caracters are erased. (I'm surprised nobody ever encountered this bug. I don't use auto-update, so it took me a while to notice it. Only on newish grid where the option is turned on by default did I notice it.)