6th socket bugged on corrupted Horror's flight, Specifically on martial artist's fists of stone

I have a corrupted pair of Horror's flight gloves, to which i added a 6th socket with perfect jewellers orb before corrupting them

This 6th socket works perfectly fine when i have fists of stone unallocated, but the moment i allocate fists of stone, im unable to place any support gems into the 6th socket

Unallocating the fists of stone, placing the support there, and then allocating it back seems to work as a work around though im not entirely sure its working as the gem disappears from the 6th socket when i do so, though i still see it if i mouse over the empty 6th slot.