In my forum I gave my users the ability to add a prefix to their discussion:
Everything works fine EXCEPT I am not able to change the color of the Advertising prefix. I can change all the other prefix colors through ACP > Applications > Thread Prefixes But every time I try to change the color of the Advertising prefix and click save, it doesn't actually save. All the other prefixes are fine.
Change to blue:
Click Save, and then it goes right back to orange when I reload the page.
It does not matter which color I select either.
Here is a gif: