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This is a user error -- what's happening is what's known as "software pickup."
The pitch for that deck was at -5.6%, but the hardware fader position was lower than the position of the software fader. When you switched that deck to become the master, you gave it the ability to control the pitch, however the hardware and software pitch position didn't match, so you must first take the hardware fader to the position of the software fader to "pick it up." Once you have met that position, you can change it.