Have you checked and made sure the drain pipe is not backing up with water due to a slow drain system. A lot of people mistake water on the floor in a drain cycle as a leak from the washer, when it's actually a slow drain that backs up and leaks at the end of a cycle.

You'll need to remove the front panel from the washer( Remove the 2 screws at the bottom of the panel, use a flatblade(putty knife to release the spring clips at the top and front panel seam), and carefully observe the waher operation and observe the hoses and pump for a leak.

Good Luck,
:) :) :)