Hello, I had a problem which I think is a bug in my last game, and came here to report it.
Last game, my golden Corrupted Bristler spawned its first minion with their correct stats (gem amount) on Hawkstrider Herald proc, then it got hit with Upper Hand.
On its death its golem spawned with only 1-1 in stat.
Meaning that one of those two interaction deleted its gem amount value (unlikely because it still had his attack stat, just not his life), or block its checking to work properly. I think it comes from Upper Hand.