I've noticed that if you paste in text, just as you describe Ananda, that'll work fine. But also, if you paste in 26 characters, then delete those 26 characters, then you'll be able to type 26 new characters before typing does not add new characters. Keyboard input still seems to work, as I can still Ctrl+V to paste again without problems. I've also noticed that hotkeys in CintaNotes no longer work and I tried a wide variety of hotkeys. I'm using version 1.4.1. Hopefully this helps in the debugging process!