Hi,
Thanks for the file. The windows are cut because the generator is using
Tile mode . This Mode slices the last segment on the side to fit between the corners.
Instead you could use Adaptive mode which subtly scales the geometry so that only whole segments are used.
I've also slightly adjusted the pivots and padding of the corner segments so that they fit together. Please take a look at the attached file and if you have any questions just let me know.
Cheers!
Paul