i don't know how to word this, so hopefully this makes sense. i use safari (v 11.0.2), and as far as i know, this has been a problem since last march.

if you try to go to your recent topics from a page with more than one path (?) using the sidebar link for recent topics, it will either refresh the page (if it's a forum page) or it'll break completely (/explore.php, /help.php). i guess it's just adding forums.php/recent/topics to the current url, and some times that works and other times it doesn't...? p;

in other words - subeta.net/forums.php > sidebar link for "recent topics" > subeta.net/forums.php/recent/topics - works

subeta.net/forums.php/forum/48/ (general discussion, but all non-main page forum pages seem do this) > "recent topics" > subeta.net/forums.php/forum/48/forums.php/recent/topics - refreshes page

https://subeta.net/explore/index.php > "recent topics" > subeta.net/explore/forums.php/recent/topics - The requested URL /explore/forums.php/recent/topics was not found on this server. (does the same with help.php - The requested URL /help/forums.php/recent/topics was not found on this server.)

and if you go subeta.net/forums.php/recent/topics > "recent topics" > subeta.net/forums.php/recent/forums.php/recent/topics - blank page

ah, no more errors or surprise white pages~~ you're a saint, !! this is fixed, lock please :D