Just did my first mission after a week or so away from the game. Was looking forward to actually being able to finish a mission with the stability tweaks that were done (especially the bug that crashed the game on me whenever I was fighting a dreadnought/elite enemy).
Turns out, not quite so fixed. Did a "Spoils of War" mission and engaged a Nurgle Dreadnought, which charged me out of its room into the hallway. As I was engaging it with a Plasma Cannon rapid fire (right click), the game crashed to a black screen.
Considering the frequency with which I experienced this bug before, I wouldn't be reporting this so quickly except that, when I had to hard reset my system, my display would not return after reboot (Full sounds, no display, occasional white static during power cycle). Eventually, I got it up by having to leave the system powered down until my monitor reported no display (~10 seconds after power down). Once done and restarted, it worked fine, afterwards.
I was fearful that the crash caused a serious issue with either my GPU or display drivers, hence the report.
GTX 1070, driver version 378.49