App does not load in Firefox 78

App not loading in Firefox. Loading spinner spins forever.

Browser: Firefox (78.0.1)
OS: W10 Pro
URL: https://www.sketchup.com/account-setup?formstate=personal

Error: Uncaught ReferenceError: MktoForms2 is not defined
https://www.sketchup.com/account-setup?formstate=personal:2840
account-setup:2840:1

Check if it is 32 bit and not 64 bit. All 32 bit browsers are broken at the moment.