I have a piece that sometimes seems to pick up two copies of a GCK sent to it, even though the GCK is only sent once (I’ve logged out the sending and receiving – and while it often works right, I sometimes see two “incoming” for only one “outgoing”).
My only clue is that the GCK does move the receiving piece – could moving it somehow put it back in line to maybe receive the same GCK an extra time?
Brian