Change in feel of moving off from a stop with the revs/bite point
I not quite sure how hill start assist works ..but believe it holds the brakes on whilst you rev and then releases ..would explain the way the throttle is performing, if this hill start assist (if it has it ) is malfunctioning ..or permanently switched on. or the calipers sticking. rears more likely.
Then hill start assist or traction control will not function correctly, if any of the other ABS gubbins is not working properly.
Lots of systems perform together with info from the ABS system, so anything that depends on this chucks up an ABS fault.
of course if you have these systems turned on - hill start / traction control on when you don't need them ..they will fail earlier than they were designed to - as they are sort of emergency devices only.
i trust you've done a brake flush and brake service .
There is a list here with all faults for fords
https://www.dtcdecode.com/Ford
You press on the numbers and page comes up with whole description may give extra information for you .
all the best.mark

