2002 380 Santego. All year long when we would leave the boat at the marina. I would shut my battery switch off. A/C would stay running if I left it on, Refrigerator and freezer would stay on.

Well about 3 weeks ago I get to the boat and the smell about knocked me down. Freezer defrosted.
I didn't think too much about it thought we lost power at the marina that week. I noticed today that when I switch the battery to off I checked the fridge and sure enough its off. Check shore power and both mains are on. I switched power lines thinking that may be it but still the same. Check all breakers in the main and in the back cabinet everything is on
Am I dreaming or do I have a major electrical issue?

Shore power on battery switch off should the refrigerator stay on? I swear I have done this for a year and the fridge stayed on