When using the showAnchorGeometry I see lots of green surface anchors in my scene and it has been really helpful for debugging the placement of objects when I tap the screen of my device.
But I also get some blue shapes too, and I'm not quite sure what those mean... Is there a document that explains what showAnchorGeometry is actually... showing?
Googling "showAnchorGeometry blue" wasn't helpful! (I promise I tried)