**BUG** Concise problem statement: In a PCB with an NPTH Solid Region, the Autorouter will route around the NPTH but manually routing a track across it does not bring up any DRC warnings. There is no live DRC warning marker and it is not flagged in a Design Manager DRC refresh. Steps to reproduce bug: 1. Create a PCB with an NPTH Solid Region; 2. Mmnually route a track across the NPTH. Results: No live and no Design Manager DRC warning. Expected results: Live and Design Manager DRC warning. Browser: Chrome, Firefox.