"Logout" Button - redirect results in empty page

The LDAP Login seems to work fine.

But when I click on "Logout" - the redirect doesn't seem to work right,

It gets stuck on the url https://extensions.typo3.org/?eID=FlyOutAjaxLoginController&cHash=858223043053526fcc49aa16bec5b907 on a blank page. (Which might be a suppressed error message?)