I have no idea where to make a ticket about this, so i'm making it here.
Fastplace is broken right now, only works vertically. Any eta to when the fix will be out?
It has been disabled in the past due to different things I think
Best thing to do is make a ticket here: https://manacube.com/support/
Hopefully you find out why and or when it might come back at the very least you’ll have reported it.
Personally have no experience using fastplace (I was not lucky with that perk unfortunately ;-; ) but according to what I’ve heard from other people, holding shift allows you to place horizontally.