The problem is linked to the definition of the 2D panel in the panel.cfg of this aircraft.
There are two solutions, but I can remember only one: go edit the panel.cfg to remove all about the 2D panel (all the [windowxx] sections). This should be enough. Keep a copy of your original panel.cfg, just in case someone remembers the other solution
PS: of course, the solution I describe is only valid for those like me that fly ONLY from the virtual cockpit. If you are a 2D panel lover, don't even read my post

PS2: maybe deleting only the main 2D panel section ([Window00] or something like that) would be enough, I don't know...