@crinrict Thanks editing title.
Those pics are all I saw when I built. (I am using an external tool as a capture tool.) At first time I posted this, the defect described in this post is that if the height of the foundation is changed, the window cannot be reinstalled in the curved wall. However, after further testing, I realized that this glitch changes the range of possible window installations. And more that this glitch is caused by changing the height of the foundation, and yet it happens in a situation where a curved wall is installed on top of a curved wall, I noticed. That is the meaning of post #9. This is all I know at this point.
And there are still some things I don't understand. That is, there have been no problems on the 2nd floor except when I first had the glitch. It will take more time on this.
I am a little uncertain if I am answering your question correctly. (My mother language is not English...)
