Cursor Bug

1. Open a new twiddle
2. Use the file tree to navigate to twiddle.json (didnt try others)
3. Click at the end like you want to add a comma so you can add another entry in the list. The cursor refuses to go all the way to the right.
4. Start typing. The cursor jumps up to another line.

http://gifyu.com/images/weirdcursor.gif
http://gifyu.com/images/weirdcursor2.gif
Note: the screen flickering seems to be a product of the way I converted .mov into .gif and isn't there irl.