a few moths ago the left front caliper froze on rotor, replaced caliper, pads, turned both rotors and bled, ok for a month, both front brakes began to not fully release the rotors, i replaced master cylinder and bled, ok for two weeks, now both front brakes are holding almost continually and are not releasing after about 10 minutes of driving and braking, I have to open the bleeders on the calipers or at the abs help if you can

 

Common issues to both sides would be:

Make sure the master cylinder is the right one for ABS. If a rebuilt cylinder it is possible to be a bad unit out of the box.

Check pedal free play.

There is a rod inside the brake booster, make sure the rod is not pushing against the new master cylinder piston when as installed (should be no clearance between rod and piston but not having the rod push on the piston).

Check brake booster to make sure it is returning to the fully disengaged position and not sticking.

If enough water in the brake fluid and the brakes are hot enough, water can turn to steam.

Might remove the fuse from the ABS system then test the car.

Individual brake issues:
Caliper is sticking on the slider pins.
Brake flex hoses have too much give, expansion and contraction.