Primordial Angelic SG Bug

[beachbeans]

Unless im brain dead, the angelic sg has an "enhance" feature that im assuming improves its terrible stats, yet this feature does not work. When I click enhance, it simply closes my inventory and nothing else happens. Thats basically it, I'm assuming that this glitch has something to do with the crystals as well, seeing how they do the same/similar thing.

here is the image of the enhance option:
http://steamcommunity.com/sharedfiles/filedetails/?id=636096496