YouTube Broke With Latest FF Update

I have many email accounts for various purposes. I’ve always kept my Google container/account separate from my YouTube container/account.

With a recent update to FF I am no longer able to keep Google and YouTube separate.

Example: I open Google container and sign into 1 email address (work). Then I open which opens in my (personal) container. Though when I attempt to login to youtube, the redirect no longer keeps me fully on pages, with a slow page load I see a skip to my work container then an error when it lands back on the personal one.

Even with workarounds of signing in other ways, opposite directions, etc. I end up at the page

Refresh and I am not signed in.