I have several local repositories. With Sourcetree 3.0.12 (I installed it about a week ago), the product has become unusable. I previously had 2.6.10 (I just reverted to it).
When I perform any action that will cause a git action (select a different branch, do a fetch, try to push or pull), there is a 50% branch the current tab will close. Operations in sourcetree all take on the order of minutes to complete in the first place, now that the tab I'm actively using closes, I'm forced to spend even more minutes to re-open the tab. Of course the next time I perform a git action, there's another 50% chance it will close again.
How did 3.0.x break so badly?