Re: build mode being odd
@toczlivia Since there are mods/CC in your Mods folder, they can certainly be causing your issue. Please do a "vanilla" test: Drag the Mods folder to the desktop, delete the file called localthumbcache, open the game to test, and exit without saving.
If that gives you back your options, your next stop is the Broken/Updated Mods list to start removing broken mods that don't have updates and updating other mods.