Starting with the obvious one: the use case. There is no use case
I discovered this problem while I was on the phone, focused on conversation, while holding my mouse button down because I was resizing Factorio (was playing windowed because I was watching video at the same time, was trying to get Factorio to fill the screen). Because I was focused on the conversation I held down the button way longer than I normally would, which is how I found the bug. I managed to reproduce it reliably, so I filed the report.
While trying to reproduce it now, I found out that it is not just resizing, I have to resize moving the mouse relatively slowly, pausing, then starting moving again, all the while holding down the button. Only then can I get it to crash reliably.
I cannot get it to crash while running DirectX (setting force-opengl to false).
I thought I was running AMD latest drivers, I just upgraded them to be sure, I am now running Radeon 15.12 drivers, crash still there. I've attached a log crashed using current drivers.
Just for the record, I've got no problems, Factorio is rock solid, the work-around is obvious