Are the developers aware of the door-rendering problem?
Yes (and the issue with quicksaving/loading).
(I'd place it somewhere at the end of bug importance).
Apparently, so would Larian.

There are still textures and models being added and temporary art assets replaced, so I would assume it is best to wait until everything is in before starting to fine tune collision detection, etc.
I reloaded and went to the homestead before trying to give the stuff back to Roderick, Esmeralda arrived at the homestead launched a fireball killing all my characters & Zixzax.
Well, that seems a tad overzealous, even if she had been right about the items being stolen...