404 after TER logout

What was the cause of the issue?

I've logged out from the TER.

Steps to reproduce

Go to https://extensions.typo3.org/
Log in
Go to https://extensions.typo3.org/my-extensions/
Log out

Output of error log

Oops, you should not see that page!

...

Suggestion: redirect to https://extensions.typo3.org/ after logout.