This issue I reported over in the X:CE bug report might be this mod problem. I also encountered another problem with the mod with X:CE 0.34, sorry I don't have a screenshot for the error.
Threw the mod launcher I add the new mod, then I activate it and run the game once with it, then I close game out. This time with mod launcher I disable the mod and play game again, and there are elements of the GUI still present. I notice it in the option menu, the settings for the audio are grey color instead of green. When I am in battlescape and I select solider inventory there is gray elements in there from the mod and also the "X" to close out some windows aren't there. Even when I delete the mod from the mod launcher, it doesn't work. It seems like there are things left over.
Just had this same issue - activated this mod Skitso's Oppressive UI, used once, decided to deactivate (really loved the vignetted backgrounds but the other stuff wasn't for me), but UI elements still persisted - notably the soldier stats bars stayed grey/black instead of the vanilla/ce colour of green, plus some other minor things. Then I completely uninstalled/reinstalled the game and UI elements from this mod still persisted even then! Just ran a full C:/ search for "Xenonauts" and purged everything - i think you are right it was stuff still in the C:\Users\%username%\AppData\ folders, found a bunch of scripts in the Roaming folder still persisting after game uninstall
[V1.07] Skitso's Oppressive UI Mod
in Completed Game Mods
Posted
Just had this same issue - activated this mod Skitso's Oppressive UI, used once, decided to deactivate (really loved the vignetted backgrounds but the other stuff wasn't for me), but UI elements still persisted - notably the soldier stats bars stayed grey/black instead of the vanilla/ce colour of green, plus some other minor things. Then I completely uninstalled/reinstalled the game and UI elements from this mod still persisted even then! Just ran a full C:/ search for "Xenonauts" and purged everything - i think you are right it was stuff still in the C:\Users\%username%\AppData\ folders, found a bunch of scripts in the Roaming folder still persisting after game uninstall