I emailed support and the replied promptly. They gave me a few ideas that didn't work (different browser, clear all browser data, incognito window).
They passed it along to the next level of support. They did say 'they' got around it by using a controller (XBox, Stadia...) to get past the main menu screen, then it worked for them. Made me feel better I'm not the only one. Unfortunately it didn't work for me using an XBox controller. The cursor came back, but as soon as I clicked, it vanished again.
I'll post any other info I get.
