[TxMt] Bizarre window behavior

[Chris Fonnesbeck]

Along with my recent experience with the "jumping gutter", I now am getting the left side of my document getting cut off from time to time. 

http://cl.ly/2J2b1h1n2Y3x0G121u3P

Manual resizing takes care of it, but its not clear why this is cropping up all of a sudden. I did not notice any of these UI issues before the last update. Was a bug introduced?

cf