Logout doesn’t work on this page:
https://translations.metabrainz.org/
Click reloads the page and the nickname is still in the upper right corner.
You need to go to the website:
and log out.
Then go back on
https://translations.metabrainz.org/
and then Logout works.
Edit:
OS - Windows 11
Edge and Chrome
I think that’s expected and how single sign on works on Weblate. Users get automatically logged in via MusicBrainz
But since this button doesn’t work, maybe remove it? 
Second question:
Is it worth translating Picard 2.x or focusing on 3.x?
Majority of text is identical. If you translate a string in one version it will automatically also be set in the other.
I recommend focusing on Picard 3 and translate what is left over for Picard 2. For the Picard 3 component most strings also have screenshots attached, which helps translating.
You are not the first one to ask this. But I have already added a big fat notification explaining this to Weblate, added this to the info description in Weblate and to the Wiki page about translating Picard. Not sure where else to put this.
This issue has already been reported upstream.
Please see Cannot stay logged out when only sign in provider is a single SSO · Issue #10159 · WeblateOrg/weblate · GitHub for follow-up.
@yvanzo what else can I do?
Nothing. Thank you for having reported it here. Now that I forwarded it through comment upstream, it weighs a bit more in favor of this enhancement request.
As a workaround, you can disconnect from your MetaBrainz Weblate account after having disconnected from your MusicBrainz account and then ignore the redirected “Log in” page at …musicbrainz.org/oauth/….
