In this case, create and meadows both use the common limestone material. Tooltips needs to resolve to every possible material variant, not just the selected default.

this should not be the case? Did you triple check?

Yeah I have checked several materials. I also think I know why it does this. It's code related.

Oh I did some testing with other biomes mods with their woods and those tags seemed to work fine with the tooltip, thats why I am confused.

Seems there are still some holes in the common system currently

Yeah it's not a huge issue, I just need to add some more code to check wether an item is possibly inside a common tag, and not just a direct reference. A lot of places I just pretend like the tag is actually just the one of the items inside of the tag to make things easier