[Skullcatrons]

I don't think this is a bug. This is just probably either the mapper being mean to you, and placing a party-member over there. How battlefields, especially game battle-fields are set up is that they uses P1 and P2 tile. the P stands for Party. 

Since we see this similar issue in Azure Meteorite map, I would suggest it is in fact, intentional by design, and would not see this as a bug.

Of course it could be very much possible that it is missing yet another P1 tile on Terra Flamma map, but i wouldn't take it as it is.