Rendering Immersive Portals

[quulah]

I recently added the Immersive Portals mod to a server. Mapcrafter still works nicely, but it complains:

2024-04-11 00:22:43 [INFO] [default] Unknown block immersive_portals:nether_portal_block waterlogged=false,

And the render looks a bit funny.

Is there a way to use the normal portal texture for this? I tried to read the documentation, but didn't quite grasp whether that is possible or not.