When I add the purple keep out area (to either the Keep-Out layer or the top layer), I get a bunch of short circuit warnings when I validate the footprint:
[Warning] Component Validator Shorted Copper Connection Between Pad Free-6(150mil,25mil) on Multi-Layer And Pad Free-4(100mil,25mil) on Multi-Layer
I tried unchecking both vias and through-hole pads in the keepout fill properties, but the warnings still appear. If I remove the keepout fill, the warnings go away.
I'm fairly new to Altium but I don't understand how a keep-out area could cause a short circuit. Does anyone have any ideas of what might be happening?