I’ve been noticing some occasional hangs of Sublime Text 3. (Ubuntu 64-bit 14.10)
I don’t know exactly what causes it, but usually it seems like it happens when I start a build, flip to another desktop (I run XFCE), and then go back to the editor desktop. The window is completely empty. If I hit the “Close” widget on the X window frame, I get a popup about the application not responding.
I’ve been using a succession of development builds over the last few months, and I’m currently on the latest one (3069).