I've seen a couple reports of this in MSFS 2024 with several different aircraft. To the best we've been able to determine, there is some residual payload that it left in the payload interface between sessions. I completely believe this, because MSFS 2024 retains many variables and states from previous sessions, which make debugging and switching aircraft on the fly very difficult for us developers. Try applying a new payload from the EFB payload interface and see if that helps. Otherwise, hopefully someone else who has seen this before and fixed it might chime in.