Not sure how to reproduce this, but my Tormented Priest currently has 5 Nora Miner abilities. one is rank 2. four are rank 3. Only one is generating nora though as far as I can tell. If I move away from my ichor units, one ability disappears and the other 4 remain. (Also, boost skeleton is currently showing as effect.boost_Skeleton.description)
My Skeletal Reaper has also gained Berserker twice in my next game from Ichor. He has both Rank 1 & 2 of Berserker and Careless twice.
I remember this bug. It's an old bug from when Ichor was first introduced I think... It happens on every rune with ichor and has to do with the icon not properly disappearing when another rune moves out of range.