.Died Events On Humanoids No Longer Fire Reliably

Bug Reports Engine Bugs
#1

Reproduction Steps
This bug is very hard to reproduce intentionally, however so far it seems to happen when a humanoid takes more damage than it’s current health.

Expected Behavior
I expect server-sided Humanoid.Died event connections to fire whenever a humanoid’s health hits 0.

Actual Behavior
Sometimes it works as intended, but sometimes the humanoid’s health will hit 0 and the client will enter a falling-down state however the .Died event connection on the server never fires.

Workaround
I have changed my code that uses Humanoid.Died to:

local event
event = Humanoid:GetPropertyChangedSignal('Health'):connect(function()
 if Humanoid.Health <= 0 then
  event:Disconnect()
  game:GetService('RunService').Heartbeat:wait() -- have to yield for a frame to simulate the behavior of .Died
  -- my previous .Died code
 end
end)

Issue Area: Engine
Issue Type: Other
Impact: Moderate
Frequency: Often
Date First Experienced: 2021-08-23 15:08:00 (-04:00)
Date Last Experienced: 2021-08-24 03:08:00 (-04:00)

9 Likes
#2

This seems to happen all the time for me.
image
Script:

local a = workspace:WaitForChild("Dummy1")
local b = workspace:WaitForChild("Dummy2")
local c = workspace:WaitForChild("Dummy3")

for i, v in pairs(game.Workspace:GetChildren()) do
	if v:FindFirstChild("Humanoid") then
		
		print("Found "..v.Name.."!")
		
		v.Humanoid.Died:Connect(function()
			
			print(v.Name.." died.")
			
		end)
	end
end

Output:
image
In fact, I was playing a game yesterday and it was broken despite it not being updated in a week and it worked after the update.

I think this should be severe.
repro.rbxl (34.1 KB)

1 Like
#3

How are you damaging the humanoids? My game was only suffering the bug periodically because I’m killing player humanoids using :TakeDamage() I was also unable to get a reliable reproduction. With that being said, while technically severe there are some work arounds.

EDIT: never mind I just saw you damaged them using both property changing and :TakeDamage().

2 Likes
#4

By the way, if you were to download the file attached and test it, do you get different or same results as me?

1 Like
#5

Humanoids can be quite finicky sometimes with network ownership. Make sure that you are trying to kill them from a server script, and that the network ownership is also set to the server manually using SetNetworkOwner. You can also set network ownership to a particular player, and then kill the humanoid from a LocalScript that that specific player runs.

2 Likes
#6

Yes, we do that already. This issue only popped up starting yesterday at 3pm with no changes to the games.

#7

Thanks for the report. We are looking into this and we’ll come back when we have any updates for you.

4 Likes
#8

This is still an issue as of June 2024.

Oddly enough, whenever this bug occurs, it appears to occur for every occurrence of a humanoid with the same name. For example, if you have several humanoids named “Bot”, all of them will encounter this .Died bug for their next non-detected death. Might be coincidence, I am unsure.

However, I suspect it might be related to network ownership / replication. NPC humanoid combat (e.g. enemy vs enemy) does not appear to encounter this issue unless a player is nearby.

1 Like