That's not strictly a "door" issue but a camera one.
The game applies transparency to things covering the camera/player view, but it doesn't negate their tangible presence (or in other words their "clickability").
It'ts the same when you have, say, a rock formation or a stone arc and then you click on the ground in front of you and the charcters start running back and attempting to climb said rock formation/stone arc.
It's incredibly annoying and I'm not sure why they never did anything about it... But then one remembers that this is the same studio that thinks the "chain system" is a great way to control a party and everything falls in place.
Don't get me wrong... Despise my occasional bitching about the things I don't like I still think that BG3 has been a phenomenal achievement, overall.
But when it comes to quality of life and inventory/UI, there are so many ways they could make the experience smoother and more enjoyable if only someone in charge took the issue at hearth.
