Ring 58 challenge keystones cannot be picked up and do not scale to party size

[CB]

The creature only drops 2 keystones no matter the party size but they cannot be picked up by party members

[Dredi]

I believe it may be because the keys "Stack" on the remains. they should perhaps have a stacking limit of 1

[Dillusionist]

this should be fixed. a single key should drop that binds party members in the area on pick-up