BTT quits and relaunches after unlocking screen

I have noticed that when I lock the screen and then unlock it, BTT quits and re-launches. This isn't a huge problem, and I suspect it's probably intentional for some reason, but it seems odd.

Jup that's intentional! See e.g. Any reason BTT "restarts" when I lift the lid on my MacBook Pro? (from sleep)

OK, thanks for the reply.