Architects don’t have software for ray tracing?
yes and they always analyze large structures for such things. Most likely the glass spec’d has been changed. Easy fix - they can switch out to another type since it is still under construction and add some solar film to the existing sections. This actually happens a lot. Where I live several homes in a new development were melting their neighbor’s vinyl siding due to the windows. Developer had to replace the windows and vinyl siding.