I am not having this problem.
Does it matter how much you curve the wall (i.e. almost straight) or if the curve goes the other way?
Can you save a file with just those walls and upload it here?
Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11