Odd Water Leak

[McCharlie]

We have noticed water coming from beneath the cabinet where the sink is in our 2017 35P. It only seem to show up when we travel from one location to another. We do not travel with the water pump on. We do usually clean the galley sink before we bring in the slides and retract the jacks. There is no water under the sink. I took it to the dealer and they say they can't find the leak. Because the service manager saw the water on the floor he is not accepting that answer. Has anyone else experienced this or have any thoughts on the source of the water.

[Ranger Smith]

Only thing I can think of is there might be some sort of flex joint for the sink because of the slide and it could be trap water