Yeah definitely not console only. I have three accounts all on the PC. One showed a bag in the store. Other two did not. Nothing to do with last year's bag either. The account that could claim is my longest standing account, pretty much from launch. The main character got the bag previously but a new character started this…
I may try again once Tidesong is fixed. I can see what looks like the place for the fifth egg by looking up and by looking down. But from either vantage point it is hanging in mid air. It shows up as interactable when you get close enough but does not appear to be reachable.