MSFS2020: 9% and 10% throttle mapped wrong?

[wf971]

Reducing the throttle from 10% to 9% ends in higher RPM than it started at, and vice versa.

I was wondering if this is a way to kickstart the plane during ground movement; if overcoming the inertia was so hard to deal with that the devs assigned an extra bout of thrust to help get the airplane rolling. And that, weirdly, it happens during -all- transitions between 9 and 10, not simply those meant to increase thrust.