I have SourceTree pinned in the taskbar on Windows 8.
After Auto updating the pinned icon gets broken in the taskbar. I have to manually unpin the broken icon, then pin it again.
All recent versions (since 0.9.x)
To reproduce
1. Open SourceTree
2. Pin SourceTree (right click the icon) in the taskbar (desktop mode)
3. Update SourceTree. It will automatically restart with the new version.
4. Pinned icon (shortcut) gets broken, although it is still highlighted as running.
5. If SourceTree is closed, the icon is no longer pointing to the new installation.

I have to unpin, then pin again while it is still running, else if I close it, next time I have to search for it in Windows 8 "userfriendly" UI to run it (or pin it).

Although it is a minor bug, it is annoying.