11.0.1 Can not enable addons

Just updated from 11.0.0 to 11.0.1 and I cannot enable any addon anymore. Espesially Contacts and Calender are needed.

When trying to enable a addon nextcloud will ask me for my password, but does not accept it. I tried restarting apache, logging out and login again. Nothing helps.

What can I do to disable the password authentication for enabling addons? Or can I enable the addons via a DB SQL command?

Nextcloud 11.0.1 on Apache 2.4.25, tried with PHP 5.6.29 and PHP 7.1.0-r3