I can apparently only reduce my view size in the game, but nothing works for increasing it.

Any ideas how to get that working?

I presume there's something wrong with keyboard layout matching, but my attempt to explicitly set the keyboard layout to anything relevant to me, or even to "us" which definitely isn't relevant, it doesn't seem to make it work any better.

I tried to fool around in the keyboard mapper, too, but it didn't make it work either.

My save is now stuck to minimal viewport which makes this game pretty much unplayable without starting all over and avoiding the only functional screen size button.