After making a few tests, I found out that the problem is related to a three monitors setup. Not only the map doesn't show but on my left monitor, when the door is open, I can see a part of the main panel. It disappears when I close the door. Also the PFD and the MFD have that yellow tint when the plane is shut down. Everything gets back to normal if I just setup X-{lane with a single monitor. I read on another post that reloading the aircraft would solve this issue. No matter how many times I reload the plane, the problem won't disappear.