Pixelmon Mod - Bug tracker

[1.16.5-9.0.4] Pokemon Evolution Visual Bug fix completed for upcoming version

Ticket description:
occasionally, when a pokemon starts to evolve after battle with trainer or wild battle, the player gets locked into the evolution screen with no ui pop up while the pokemon does not evolve. This locks the player and forces them to restart their client as they can't hit ESC during evolution.

The only log yielded at this time reads as follows:
[29Jun2022 23:07:53.744] [Server thread/WARN] [net.minecraft.world.server.ServerWorld/]: Trying to add entity with duplicated UUID d3701a32-d306-4bc5-a7f7-f53449ebdd1d. Existing pixelmon:pixelmon#83078, new: pixelmon:pixelmon#83156
[29Jun2022 23:09:41.393] [Server thread/WARN] [net.minecraft.world.server.ServerWorld/]: Trying to add entity with duplicated UUID dcd47b88-8924-4471-ab90-d62019323655. Existing pixelmon:pixelmon#83414, new: pixelmon:pixelmon#83432



#26804 Posted by Swif1y » 30 Jun 2022 17:06


I was unable to reproduce this, can you tell me what mon you were trying to evolve?

#26812 Posted by Yeterell » 01 Jul 2022 01:21

This glitch has been reproducable mainly by using Piplup, however it's occured on many others too. I thought it was pokemon specific at first but I realized it mainly occurs when you end a battle using the pokemon thats about to evolve. IE using a lvl 15 piplup to level up without switching in battle. I've also been able to have it happen if a pokemon is evolving during a trainer battle via exp share then switching to it while the trainer battle is still occuring.

#26828 Posted by Swif1y » 01 Jul 2022 17:48


Thanks for the reply, using this data, I was able to confirm that I experienced the same issue. This can be seen in this video: (https://streamable.com/u5j9g7). This will be further investigated, thank you.

- Swifty

#26863 Posted by Swif1y » 02 Jul 2022 17:36

Moved to an internal.

#27080 Posted by Maq47 » 19 Jul 2022 16:10

Note that this bug also happens in the MC 1.12.2 version as well. Do you know if the upcoming bugfix applies to that as well?

#27195 Posted by Maq47 » 28 Jul 2022 17:07

Swif1y Can you please provde an answer? I'm on a server that has this bug, and we need it fixed soon.

Ticket details

  • Ticket ID: 18405
  • Project: Pixelmon Mod
  • Status: Fix completed for upcoming version
  • Component: Crash
  • Project version: 1.16.5-9.x.x
  • Priority: Normal
  • Severity: Normal
  • Forge/Sponge: Forge v36.2.34
  • What else would be useful to know?: BiomesOPlenty-1.16.5-
  • Assigned to: Swif1y
  • Reported by: Yeterell (Send PM)
  • Reporter's tickets: (List all tickets)
  • Reported on: 29 Jun 2022 22:42
  • Ticket last visited by: 9Tales on 14 Sep 2022 19:20