Version 1.4.1
Minecraft 1.18.2

Steps to reproduce:

• Build 3 x 2 standard size mining dimension portal
• As Activated Werewolf origin, crouch and walk into portal
• Upon dimension transfer, game / server crash occurs

[able to append crash logs later once im back at my pc]

Only was able to test on that dimension / portal configuration, possible that nether portal is similarly broken, and / or that using a taller portal (4+) would temporarily solve issue

3x2 is not the standard size for a portal, the solution as you mentioned is to use the correct amount of blocks for a portal