Bug where tooltip for amount of corpses on lantern of arimor can be incorrect

After swapping two modifiers, their on-hover tooltip for the amount of increased corpses and allflams will become bugged. Instead still showing the previous values from before they were swapped.

I tried "duplicating" the highest tier modifier :)
I have a feeling this is further bugged.

I'm fully specced into corpse chance, however after bugging 4/6 packs I got 0 corpses to drop in my map???

Low sample size of course (1), but this might be more than just a tooltip bug.