Spawning multiple Nether Portals before Player teleports

[bunny-the-cat]

Expected behavior

• Build a new Nether Portal
• Throw X Items through it
• Step into Portal
  -> 1 Portal with dropped items

Observed/Actual behavior

-> Many new Portals, one for each item

Steps/models to reproduce

• Go to Nether
• Build a new portal, in an Area where no other portals are
• Activate portal
• Throw X items through the portal
• After X Items use Portal with player
  -> X Target Portals are generated when generating new Chunks

Plugin and Datapack List

Plugins: BlueMap-3.13-folia
Datapacks: none

Folia version

git-Folia-"41c5548" (MC: 1.19.4)

Other

Maybe an Exploit for Obsidian?

[Spottedleaf]

I explicitly added code to check for existing portals before creating one, but it looks like the POI update is delayed by 1 tick so there's still a window where this can happen. Not sure how to deal with this.

[AloneRUS]

Is it actual problem now or it was fixed?

[phm07]

Also happens with players if they enter the portal at the same time.