How to recreate bug: 1. set diablo 1 to change desktop resolution in DXGL 2. start diablo 1 3. start a game 4. press escape to bring up the in game menu 5. choose quit diablo 6. you'll now be at your desktop in lovely 640x480 resolution Other than that, the game seems to work well with the setting and running in opengl :)
I just tried this again and I realized what happens is that it sits in 640x480 for a bit but after a minute or so it'll pop back to my regular resolution