Same for me!!!
I have MSFS2024 and installed the compatible version, without any problem.
Yesterday I bought the update for Premium version which flies perfect with FeDEX GE N667 FE.
But I observed also extra eye outside the cockpit like your picture!
I un-installed everything and cleared al folders I know ( except the FedEX livery), then installed the bird again and the external crew was still there...
Then I un-installed the Fedex livery and used a standard inibuild without FedEx livery.
Now the outside pilots have diapered...
Then I installed the FedEX again, and the outside pilots came back.
Conclusion : It is a livery problem!!!
So I stop now have nice whiskey and wait for the update.