Eternal Labyrinth crafts allow corrupted gems

I have discovered that the Etarnal Labyrinth (75 level) allows corrupted gems for some crafts. Unsure if this is intended or not. I had the craft which transforms a gem to its transfigured version at random. I put in my 21/20 corrupted Boneshatter (ctr clicked it in, not by mouse) and it turned into 21/20 corrupted Boneshatter of complex trauma. I think this is a bug because one of the upgraded labs (83 level) is specifically designed for corrupted gems. This happened on character PloomBigBum in a private league.