Hi @nico155bb I could reproduce the error with the roof join. It looks like one of the roof is flipped. You can fix it if you set the alignment of the short one to “Bottom”
In any case, we will investigate why this happened.
I cannot reproduce the other error of the extended wall though. I’m moving the roof of your screenshot aside, the walls unextend, then I move the roof back, and walls extend normally.
Just in case, try to install the 3.4 RC3 version (which is the same one I’m using): VisualARQ 3 - Version 3.4 RC3 released