The login credential timeout on https://horizon.wikimedia.org seems very aggressive; for my usage I have to log in again every time I use it. From folks on IRC it sounds like it's on a 12-hour timeout.
This wouldn't bother me too much except that the Horizon login requires 2FA, which means I have to go find my phone and fiddle with the authenticator app every time.
In comparison, my Google and Phabricator sessions which also use 2FA seem to last a month. I'd like for my credentials to stay valid as long as possible unless revoked by a password change. A month maybe, or ideally until 2038. :)