Well, my max is 2020 update 3, so maybe you need exactly this upate 3 to reproduce the bug.
___
Anyway, I renamed ENU dir and also moved away some plugins from max dir.
Here is the list of plugins that was installed:
And still no luck, the issue is still here. Max is pretty clean now, and there are almost no plugins as you can see.
Here is how the issue looks like:
https://vimeo.com/549637080
Btw my max 2021 is fine too. I have 16, 18, 19, 20, 21, 22... I can test this issue everywhere if you wish, but I don't think this could help you
___
Anyway, I renamed ENU dir and also moved away some plugins from max dir.
Here is the list of plugins that was installed:
And still no luck, the issue is still here. Max is pretty clean now, and there are almost no plugins as you can see.
Here is how the issue looks like:
https://vimeo.com/549637080
Btw my max 2021 is fine too. I have 16, 18, 19, 20, 21, 22... I can test this issue everywhere if you wish, but I don't think this could help you