Here is another problem with Firefox.
The up / down button is missing.
(It's still there, but it's at the bottom of the page.)
If I reduce the page width, it appears, but then the buttons for the thread pages disappear.
I have set all my browsers so that browser history and cookies are automatically deleted at the end of each session.
The two pictures are about one and a half hours old.Mosfet,The problem was fixed. If you still have it, go to the link
http://forum.spaceengine.org/ucp.php?mo ... te_cookies
and click "yes".
If it didn't help, purge your browser cookies.

When I read JackDole's post I checked and it happened to me too, now I read yours, and it's fixed.
It works now also with me.
Holy moly...Hehe, unfortunately Chrome and Firefox have sometimes a different idea of where the "page center" actually is: