Crash ridding through a nether portal

Stack trace

https://mclo.gs/sute7H7

Plugin and Datapack List

[12:43:31 INFO]: Server Plugins (15):
[12:43:31 INFO]: Bukkit Plugins:
[12:43:31 INFO]: - CMI, CMILib, CommandRestrictor, CustomEnchants, LuckPerms, PlaceholderAPI, ProtocolLib, SimpleClaims, SimpleCrates, SkySquidPlugin
[12:43:31 INFO]: Vault, ViaBackwards, ViaVersion, WorldEdit, WorldGuard

Actions to reproduce (if known)

I am using a plugin that allows players when shooting with a special bow to ride the arrow and dismount it when it lands, I using the following events EntityShootBowEvent , EntityDismountEvent and ProjectileHitEvent

If a player shoots the arrow in overworld through a nether portal it will crash the server.

Paper version

[12:43:43 INFO]: This server is running Paper version 1.21.1-99-master@1bc02e6 (2024-09-25T02:41:02Z) (Implementing API version 1.21.1-R0.1-SNAPSHOT)
You are running the latest version
Previous version: 1.21.1-2312-d7a7c91 (MC: 1.21.1)

Other

Is this something that needs to be fixed on paper's side or should I fix it on my plugin?

Start with the linked stack trace and the reproduction details for Paper 1.21.1-99. Review the interaction between EntityShootBowEvent, EntityDismountEvent, ProjectileHitEvent, and a nether portal while reproducing the crash with the listed plugin setup. Done means the server no longer crashes, or the issue is identified as belonging to the plugin rather than Paper.