My ESS did much the same, she would 'dig' all the water out of both her plastic and stainless bowls !
No matter where I put it etc. she just seemed to enjoy doing it

In the end I bought a bowl that hooks onto the side of her run, no more problems ! :) (although she will dig the water out of her washing up bowl {no don't ask :rolleyes: !!}).
A bit difficult to do in the kitchen !!, but maybe raising it a little MIGHT make the difference?
Alan