[Not a bug] Bonus Affix Bug

I thought I’m lucky to have this item, the permafrost Bonus. But my bad cause I can’t use It, as you can see to the effect at least 1 Permafrost, but when I equipped it, this doesn’t work.

You need atleast 4.

But on what is written, I only need 1.

No. It says 4. The quality looks horrible. It looks different than the other 1s.