Is my car haunted? It changed the charge limit by itself overnight?

This morning when I went out to my car after charging at home overnight, I noticed that the rated range on my 85D was down to around 220 miles or so. Turns out, somehow the car had set the charge limit to 83%, down from my usual 90%. I haven't touched the charge limit setting in about 2 months, so I have no idea how or why the car would move the charge limit down by itself. Has this happened to anyone else?

No one else has the car loaded in their app. Even so, can you even set a charge limit of 83% charge via the app?