I tested this and was able to replicate what you've reported. The windows will place on the curved section when the foundation is flat. And they will stay in position when you raise the foundation. But if you remove one and try to place it again, you can't put it back and get the error. You can put them back if you lower the foundation back to flat and then raise it again after you place the window. If you raise the foundation first, I could still place windows.
It appears that there is some kind of bug that only occurs if you place the windows then raise the foundation. Otherwise, doesn't happen. So, the workaround is to raise the foundation first I think.
Hope this helps.
Thanks for testing and reply. But sorry, that didn't work for me. And I noticed one thing. That is, it may not be only the change in foundation height that is causing this issue. Look at the following pics.
A: Curve wall and curve wall are grounded at the top and bottom
B: Not grounded
Both raise the foundation first.
Only in A, the change occurred about window's position.
Also tried to put the windows on first.
Happened issue
Nothing change
And also, I don't know if this is related to this or not, but can you tell me one thing? Is this normal behavior for this window?
Thanks again.
