Also, another bug I found. I'm not sure whether to make a new topic for it so I'll just post it here.
The bug occurs whenever I select all the text and press backspace really fast. The follow message is thrown:
Also I'm having more issues with text appearing randomly, if I copy paste text then sometimes it just appears a bit further down in the editor and I cant select or remove the text, same as I posted above only now caused by copy and pasting.