I have 3x the same airplane at one time on PRG. Attached screenshot.
I don’t think this is a bug, I just think game has only so many A/C reg used
Arrivals list are not finished. And we had to remove additional regs (even with that A380 is still arriving to often), So its not a bug - you are just unlucky that server send 3 BA A380’s in a row.
We are working on additional liveries especially for M-planes - arrival list will grow and it will be less possible to have 2 planes with same reg arriving.
But its will take some time. And yes its not a bug so I will move it to general discussions.