I hope this issue has not previously been addressed on the forum. I could not find anything on this topic with a search. So, here goes.
I have always assumed that the fresh water tank in our 2022 Elite II could be filled until water flows out of the overflow tube underneath the fridge, regardless of the fresh water sensor reading.
This approach is recommended on p. 61 of our 2022 Oliver Owners Manual: "fill until water starts to run from the freshwater overflow..." I have regularly done just that with no issues--until a few days ago. When filling the fresh water tank, the aisle floor bulged upward, the entire trailer shifted to the curb side binding the door, and then, with a loud CRACK, the backsplash on the sink side of the galley countertop separated by about 1/2" from the fiber granite countertop, because the corner of the countertop near the sink was sloping toward the curbside! After we recovered from the shock, my wife and I immediately ran fresh water (via the pump) into the gray water tank through the galley sink until the trailer shifted back into equilibrium. Fortunately, this enabled the aisle floor to level out again, the door to unbind, and the countertop to slowly rise up again to meet the backsplash, so the two once again line up.
When we get home, I plan to re-caulk the joints that separated, and carefully inspect for any additional damage. So far, all appears to be "back to normal" while we continue our extended trip.
Lesson learned: despite what is recommended in your Owners Manual, monitor the fresh water tank level when filling, and once the sensor reads close to 100%, SHUT OFF THE WATER! DON'T WAIT FOR WATER TO FLOW FROM THE OVERFLOW TUBE!