"Displaced" nether portal - generates non-vanilla portal (4 high)

If a nether portal tries to generate in another faction's claim, it is "displaced", it generates outside the faction's claim to prevent portal raiding, but there are a few minor bugs with this. If a portal generates in this way, it generates a 4-high portal without corners. A vanilla portal is 3 high, 2 wide, with corners (14 obsidian). If a portal generates normally in the overworld (not a displaced portal), it generates as a vanilla portal. See screenshot for example of a non vanilla portal