Video settings not saved/not loaded when starting new game session

[Yetoo1]

Whenever I start Double Action: Boogaloo the game opens in a window and the video settings aren't what were saved in the last session and instead seem to be auto detected. There are no launch options set via the game properties in Steam. I have validated game files multiple times, and most times 5 - 10 files fail to validate and redownload, but this issue still occurs. I am experiencing this in Linux but have not started this game on Windows to see if the same issue appears.

DA:B Version:
Build Label: 8 # Uniquely identifies each build
Network PatchVersion: 1.5.0.1 # Determines client and server compatibility
Protocol version: 24 # High level network protocol version

System information:
https://gist.github.com/Yetoo1/b10f578a0c781c453ba3449e257b6782

[Yetoo1]

This is mostly resolved by deleting Double Action/dab/videoconfig_linux.cfg, but the video settings accessed via the three dots in the main menu still aren't persistent. Those specific options that aren't persistent are Screen Space Ambient Occlusion and Pretty Pixels. They remained checked at every start up. The menu for those two options doesn't have an explicit save button so I'm not sure if the interface is broken just for me or for everyone, but unchecking and executing mat_savechanges doesn't save as well.