Official comment
This is normal - when your fader is not at the current pitch value, you need to "pick it up" so you need to move the physical pitch fader to the position where the software value is. You noted a "crazy jump" because you probably overshot where it was. The pitch range was higher because you noted "big jumps in BPM" so in order to be in a valid range, it had to change to a higher % range on the fader.