Missing Great Divide tooth not missing

[trailmix]

when attempting to port using Ring of Great Divide from within Great Divide I am getting an error "You are missing some required components. You are missing Tooth of the Great Divide." Yet the tooth is in my inventory bag. It doesn't matter which bag I move the tooth to, it doesn't matter if I hold the tooth on my cursor, the error persisted.

Relogging fixed it. But why?