Drain pumps are designed to pump water not suds . All your water is turning to suds , after the dry cycle most of the suds have turned back into water and thats what you see.
You should be able to detach the black panel off the front from the control panel.
Reattach the latch and control to the inner panel. Closed the door and run a quick or 1 Hour cycle.
Now grab a beer .. maybe two and watch the dispenser. Whether it has a wax motor or a cylinoid.
It should only activate twice . First time to release detergent in the wash cycle and once more in the rinse cycle for your JetDry.
If it is activated more the twice then it is your control.
Only twice you have a leaking dispenser.
Leaking dispenser is the more likely cause , But I have seen a bad control One time !
- Samurai Appliance Repair Man likes this