- Go to https://paws.wmflabs.org
- oauthorize PAWS on mediawiki.org
- click "Start My Server"
This fails with ERR_TOO_MANY_REDIRECTS on Chrome, and on Firefox too (even after clearing cookies).
From a quick glance at the web console, it looks like there is an endless loop of 302 redirects between .../paws/user/HaeB and .../paws/hub/user/HaeB (HaeB = my user name).