I had been playing with a rigid structure solution on how to prevent the door from getting blown against the open window in the dinette area. But then after using 1/2" pipe insulation for the drawers, I thought it might work well for the window issue as well. It does, You cut a length of Gray/black pipe insulation for 1/2" pipe to length for the side of the dinette window. It already comes with a slit in it that just needs to be fully opened with a utility knife. Then you insert the open slit over the edge of the plastic. You remove this part when closing the window of course. Now when the door gets blown by the wind it is gently cushioned by the foam on the edge of the other window. I realize that new production has or should have a clamp or clip system but my 2019 does not.
By the way, I have white tape on the corners of the windows so I can see the edge when walking around outside the rig.
You can also use this pipe insulation to run between the drawer handles which adds more resistance to open during travel.
Lastly, I installed baby protective edging along all of the edges of the shelves and cabinets to protect my head. I am 6' tall and I was always hitting my head when bending over until I padded these edges (plus I learned where these edges were over time). I also put plastic caps on the bottom section of the handle extensions which can really give you a nasty cut in your head as well.
Now my LGM is safe for an old guy like me!