I'm seeing a similar problem happening now with the brace supports I'm working on and I'm not sure why. I made them mostly using walls but also using a cylinder for the round part together, but now each part that sticks out from the back wall has these two white corners on both sides of the cylinder. Is this related to the problem I'm having with the door?

https://www.dropbox.com/scl/fi/c0wn7qyt ... 8k1i7&dl=0