I am staff, and it has happened to me so it is not a staff rank problem. It just needs to be videod/documented. I’ll try to replicate and post video if I can!

 

I have found if i leave an alt at the spawner when i go to sell i have no issues with my spawner when j go to sell. If i dont have had it do this 4 or 5 times during a day

 

I have found this too. It is the action of leaving the spawner and returning to load the chunks that causes this bug.

 

server: mainnorth
/home spawner

 

The video above is also happening to me on my setup on main east at /home spawner.

 

I'll make a new setup probably on Tuesday on MainEast. Will let you know if the bug continues there.

I have not checked that, tbh. That setup was underground, but idk if there were caves around.

It takes about 2-3 butchers for the bug to resolve. If you chill at the spawner, eventually the polar bears stack as normal again.

 

Considering I was using the same setup I will give my point of view too.
No polar bears around, I broke many blocks around to check, and used the sound : no polar bears. The weird thing about this is that disappeared polar bears will stack to the new ones once the bug is naturally fixed (as explained in a previous post in this thread)

I don't feel like a fresh butcher solves the situation. The bug is fixed randomly after some minutes (sometimes only 5 min or so, sometimes few hours)

 

3297 66 1397 MN

At around 2:34 i state that there is one stack, but there was in fact two stacks already at that time.

The fact still stands that one stack that isn't seen was being killed while the other stack was growing.

This is not a duplication but literally two stacks in one.
Whether there are two stacks at 150 each or one stack at 300 this does not change the amount a tool will kill at a time. Piercing 10 on an xbow will always kill the same number of mobs according to the health per mob, regardless of stacks it hits. This can be proven with two stacks of the mob being shot at the same time resulting in less kills per stack but the same sum total being killed.

For example, shoot one stack of passives and 10 passives die, shoot two stacks of passives and 5 from each stack will die.

I'm assuming this has to do with a limit that was placed on mob stacking when the sheep exploit was discovered and reported as these issues began immediately after that exploit was patched.

When a mob stacks over 500, this also breaks the stack. If you attack a stack of mobs over 500 they will simply disappear.

I also believe there is in some way a phantom stack that ends up being created when you leave the set up. So the mobs are technically stacking but only to a stack that cannot be seen or interacted with. (This is unsubstantiated)

Not sure how relevant but set up wouldn't break when i would use /back when unvanished and vanished, but did break when I used a warp while in vanish.

 

Another thing to note is that the bug does not seem to happen should you leave the spawner setup by flying or walking away. I have been completely unable to reproduce simply by moving away from the spawner, I need to use /warp, /back, or /home to activate.

 

From the random reproduction steps I have been trying myself, this statement does seem to be true, I could also neither replicate it by walking/flying away

 

Ive been freely teleporting away from pb set up constantly all day with no interruptions. Seems to be okay but can’t confirm in all situations.

 

No issues at my shulker farm the past couple days; been able to teleport away freely. Ill use another spawner set up later tonight and edit my post

 

It perfectly works for me !