After recently upgrading to 0.9.12, the tree views (history and delta) seem to be repeatedly redrawing the revision list. It eventually stops (after a few hours). While it is redrawing it also uses 50% to 70% of the CPU, causing my Macbook Pro to get very hot. Here is a screen video showing the problem: http://www.youtube.com/watch?v=KhD3e-9Rbx8 Note: The video is unlisted so is only available from this link.
A little more info: I performed a merge while the view was still redrawing, and after the merge was done, the redraws stopped. I then exited the program and re-started it, and the problem did not occur. I then made a code change, exited, re-started and the problem still did not occur. I committed the change, exited, re-started and still no problem. So I'm not sure how to reproduce it.