I'm doing a Keysight ADS demonstration and it seems to show stitching vias between ground and power planes. The PCB is an 8-layer PCB (the Texas Instrument PandaBoard) with two planes, a ground and power plane. I've understood stitching vias to mostly be ground-to-ground. Is it normal to run stitching vias between GND and PWR, would that not simply short circuit the PCB, and am I entirely misreading what the 3D model below shows?
Have not worked with stitching vias at all before but I think the idea of that they provide a ground path when there are multiple ground layers seems pretty straight forward. But, stitching between GND and PWR I do not understand.