Max limit of 8 favorite engravings

On just one of my characters, I seem to have a max limit of 8 favorite engravings. When I try to set favorite on any additional engravings, the star icon never lights up. I don’t see this problem on any of my other characters.

gif showing the issue

What do I need to do so that I can set more favorite engravings on this character?

There’s only 8 good engravings so it all works out.

Sounds like you have options. Shadowhunter have at least 2 good builds (that are about equal).
Mainwhile bard with 1 possible build that have like 3-4 mandatory battle englavings and you cant switch 2 (my opinion 3) of them. Ofc only 1 posible class englaving.