Thanks for having a look, RB.

While fiddling around, I was changing the video options while having the dual screens active for the apple and the ap2000, and noticed that changing the screen from left to right, then single, then back again would give a segfault under -video bgfx and would be fine under -video soft or -video opengl. (Running under Ubuntu 19.10)

[Linked Image from]
change to single (screen 0)
[Linked Image from]
change to single (screen 1)
change back to left to right.
then segfault.

I think it happened somewhere between 214 and 215 because 215 will segfault immediately when changing screens around and 214 seems ok for me.