When you draw Protodrake, you get Dragon X in your hand on the right of Protodrake. If you get an Orbital card on the right of Dragon X and you play Protodrake, the Orbital card gets a yellow border, even though it wasn’t next to the card that was played.
I have a screenshot to prove it if you’re interested. I also have a replay.
(Outcast cards and Crewmates might also be messed up when it comes to cards generated by Protodrake, haven’t seen it, but would make sense if Dragon X is like a ‘ghost card’)