If left wheel brake isn't working then it would pull to the right when braking and could drift right when not braking since there is 0 drag on left wheel.
Front wheels should spin "freely" but there will be some drag because of runout(rotor can't be perfectly flat), and brake pads do touch rotor lightly when brakes are off, this is to keep debris out of pad rotor contact areas.

In earlier post you said right wheel didn't spin freely and when you opened bleeder and retighten it did spin freely, which would point to a pressure release issue.

 

I am having the same problem,I really tell it’s pulling on the highway once I get up to about 50 mph or so! I know the right front tire needs to be balanced.I’m taking care of that this morning at discount and I’ll have it looked at today also