1) Create new project
2) Load up your asset(s) and modify the avatar
3) Go to SDK and login
4) Once logged in, Builder tab is completely locked out
5) Go to other tab (Authentication etc.)
6) Go back to builder tab -> all options are now unlocked
And by locked out, I mean all options are greyed out.
I do have faint memory of this happening as well when I come back to the project after closing Unity and wanting to update the avatar, but I am not entirely sure.
OS: Win 11 Pro (latest at the time of writing)
SDK: 3.10.3