On a real KiCad fixture, a BOM resistor had no PCB footprint assigned at all, and the check printed 'PCB footprint .' The fix states plainly that the comparison cannot happen because the PCB side is missing.
From the Grok pain-radar digests, Nov 1-2 2026 (Nov 1 8:41 AM ET through Nov 2 7:41 AM ET digests plus the Haitch editions). Verified live 2026-11-02: issue/PR read; title and state confirmed.