Check out the date of the instructions you posted. Compare that to the date that the plane went into commercial service.
I might suggest the problem is even far worse and negligent than first suspected.
Several news outlets are sharing NASA ASRS data, with numerous reports of experiencing similar conditions and eliminating the problem by switching OFF the auto-pilot.
Pilots have reported issues in US with new Boeing jet
Airline pilots on at least two U.S. flights have reported that an automated system seemed to cause their Boeing 737 Max planes to tilt down suddenly.
"The pilots said that soon after engaging the autopilot on Boeing 737 Max 8 planes, the nose tilted down sharply. In both cases, they recovered quickly after disconnecting the autopilot."
The bulletin specifically refers to the condition with autopilot DISENGAGED.
Undoubtedly, more reports have been file with Company. Question then becomes, did their maintenance forward a required report to Boeing. Either way, all hell is going to break loose on this.