Full windshield…..dust and debris swirling in cab

Installed a full windshield and now I’m getting lots of dust and debris in the cabin. Do not have this problem with the half windshield. Note, I have the Polaris back panel window installed behind the seats….thought that would cut down the dust from getting into the cabin. Works great with the half windshield but is awful with the full windshield…..anyone had this problem?