According to your testing, does the issue occur with ONLY Immersive Portals mod and Fabric API?

Yes

Describe the issue

Door states do not sync for all players on a server, when placing a door (Birch Door in this case) - touching the portal, I can open it and go through the doorway but my friend sees the door as closed and cannot walk through it.

Am on Minecraft 1.19.2 with the most up-to-date version of the mod at the time of writing.

It is inconsistent to reproduce and I currently don't have any good ideas on how to do it. Feel free to close this, I will post again if I find a good way to reproduce the bug. Just want this to be known!