a broken rune?

I have a major absorption, but the icon shows as minor. And it's the only rune I have that the trader won't give me a quote on, when I select it to sell it a window pops up saying "The trader refuses to buy that item!"

What's this all about? Is it a bug? Has anyone else had something similar? I'm not stressed about it, it's only 2k max if I sell it on the open market and probably about 300 if I could sell it to a trader... But it's weird and I need some sort of understanding o.0

It is a pre-patch rune. It came before the graphics for runes were changed.

Personally, I'd pay more for those because the new ones look stupid.