Frost Bomb of Instability behaving as regular Frost Bomb

Socketed in a Matua Tupuna with corruption implicit "+2 to level of socketed duration gems", Frost Bomb of Instability behaves exactly as Frost Bomb. The tool tip shows everything right, correct skill name, no cooldown etc., but when used it does have a cooldown, pulses during secondary duration as regular frost bomb does, etc.

If slotted in body or boots instead of shield, it works correctly--I get a one stage frost bomb with no cool down. I switched to a plain old titanium spirit shield and that works fine too.

I don't have another Matua Tupuna presently to see if it's that specific shield or the corruption causing it.

Bug report reference number 3,204,662,128.

[Edit] Forgot to mention, in all of my tests, nothing else was linked to to the gem.