After Effects Menu bar not working at all

HI there.

This has been an issue that has been heppening more often to me, until today I can't clear it at all. Clicking on anything in the menu bar will just highlight the top level item, with nothing dropping down. Sometimes, the drop down will flash briefly then vanish. I was able to resolve this with an app restart innitially, This then grew to needin g system restart. Now I can't clear it at all. It has also now affected right clicking within the app - nothing happens. This occasionally effects other CC apps as well, but at the moement it has competely rendered AE unusable. 

I have both 2021 & 2020 installed. I need 2021 in place, because you cannot export to Media Encoder in 2022, but that's a whole other story. The menu bar & right clicking isn't working in either version.

The menu bar and right clicks are fine in all other apps. I'm using a magic mouse on MacBook Pro 2019, but the results are the same with a plugin mouse or the trackpad.

At a loss with what to do to be honest. The amount of time I've lost to Adobe problems in the last 2 months is sickening - So many little bugs and issues that soak up work time. This issue has brought things to a standstill though.

Can anyone help? Thanks in advance!