I never have but I am surprised that with 4 wheel disks that they are not stopping the vehicle bat are causing enough heat to effect the braking. Disk brakes are not usually prone to brake fade from just 1 or 2 stops.
The easy test is to bypass the ABS unit to see if it helps.
it seems to me that if you can make enough pressure to generate that much heat that the fluid is getting there. When you changed the pads were they work evenly
Artificial Intelligence is no match for Natural Stupidity