I got this crash when I right-click on the top part of a door, if the bottom part is not visible
http://pastebin.com/WRHG2haK

I can still click without crash when it is the top part that is missing.
I must destroy the bottom part to get the door, and replace it to make it complete again

If I destroy the top-only part, I don't get a door.
EDIT: I got the door when breaking top part.

If I play on my server, the client crash, but not the server

The door just become half when I go far from its chunk and come back or quit and relog.
A door placed when facing North, with the hinge on the left, always stay the same, but a door placed when facing south with hinges on the right completely disappear, but do not allow to pass through(I can still interact with thing behind)

How are you able to get half doors? Or I might be misunderstanding the problem.

Okay I think this has to do with a problem in Minecraft Forge with disappearing doors. MinecraftForge/MinecraftForge@f088e3d

Maybe try updating and see if this fixes the partial doors and I'll also release an update to just make sure that it is a door hopefully to stop that problem if this ever occurs again.

This seems to have fix the problem nicely, thanks(I didn't have the latest version because in my last modpack it made a mod crash, which I seems to have removed :P )