It still worked with the suggested workaround, but I did have a slight heart attack when I saw that even in safe mode I couldn’t check any boxes. Never again will I touch the CSS, but if I do, I’ll clone it and test first on a separate environment.
I would be proud to be the idiot that drove you guys to the dev board to make your safe mode even safer from dumb mistakes like mine.
By the way, this is easily the best forum software I have ever used. Thanks for all your work and support!