I just installed SourceTree 3.0.8 on Windows 10 Pro, and unfortunately, found it to be unusable. Once the application is minimized to the tray, it won't relaunch. Instead, there is a Windows "error ding" sound.
Also, there's a flag that appears on launch indicating "Git-LFS not supported", urging me to update to Git 2.12.1 or later. I had Git 2.17, but nonetheless, I upgraded to Git 2.19, and the flag still appears.
I am giving up on SourceTree. Such a waste of time, really.