No prefixes in the Implemented prefixes box for a suggestion forum

[Stuart Wright]

I have set up an implemented prefix as well as the duplicate, not planned and lack of interest prefixes and set them to be usable in the new suggestions forum.
But still there are no prefixes available in the Implemented or Closed prefixes boxes for the suggestions forum.

What am I doing wrong?
Thanks
No prefixes in the Implemented prefixes box for a suggestion forum

free plugins
minecraft paid for free
mcmarket
mc-market
free minecraft paid plugins
free minecraft plugins
spigotmc
SpigotMC
aac free
ewg free
Minecraft Premium Plugins
ewg free download
litebans free
epicworldgenerator free
free schematics
leaked schematics minecraft
schematics
schematics leaked
schematics free
minecraft schematics free
paid minecraft schematics free
paid minecraft schematics for free
free cracked plugins
free cracked minecraft plugins
plugins
featherboard download
featherboard plugin download
antiaura download
xenforo leaked
xenforo for free
xenforo addons