So if it isn’t the process, what else could it be? I assume we are both running the same version, although I doubt that is relevant as this has happened for the last two versions, and possibly update 3.
Maybe the plane we fly? Or perhaps the hardware? For me, the shutdown procedure is pull the fuel lever back on my TQ6+, then flip the avionics switch on my Saitek switch panel, and not use the keyboard or mouse at all. I can get away with flipping all the switches, including the magnetos, to off, including the alternator so that the only things left on are Avionics, and the BATT. Flip either one, and it trips. Could it be the virtual cockpit, if you are using the mouse/keyboard to shut down? The commands are being sent via SPAD for the panel, so SimConnect, but that’s beginning to sound like clutching at straws at that point.
In any case, my next flight I will do what I usually do, but use the mouse to pull the fuel lever, and flip the avionics switch, not the hardware, and see if that makes a difference.
I used the mouse to pull off fuel, and flip both avionics switches, and did not use phyical hardware. Taxied just off the grass strip at SMH, and told ATC I was clear of the runway, and the flight was logged.