Bounties can't be completed on dedicated server

[Erithex]

When a bounty target has been killed, the following is logged to the console on client side:
[Warning: Epic Loot] SENDING -> RPC_SlayBountyTarget: Greydwarf_Elite (target)
From what can be seen, on server side the procedure call never completes / goes to timeout.

Never got to this log (in Bounties.cs):
EpicLoot.Log($"Bounty Target Slain: bounty={bountyInfo.ID} monsterId={monsterID} ({(isAdd ? "add" : "main target")})");
(Yes, the bounty was in progress and mine).