I observed the following misbehaviour first on Workplace, but the same seems to apply to PCG and Academia. These are all communities where I do have an account, but never participated on meta.
When I go to meta on Workplace I am not logged in. I was told (and that is also what I remember from other registrations within SE) that an account should be automatically created. However, nothing happens and I am simply not logged in. Worse, when I click on the nice and shiny "log in" button in the top bar, I simply get redirected back to the root site of the meta.
Hence, I have no possibility to join the site metas or log in.