Zendesk is the help desk software that Asobo uses. You can find it by pressing the “Support” button at the top of the screen.
I’ve flown the steam gauge 172 exclusively these last few days, and I don’t have this problem with it. The only mod I have running that could affect it it is the GNS530, and Navigraph.
If it’s the G1000 172, are you certain its not the red warning dinging you will see highlighted at the bottom right of the PFD? You can cancel it by pressing that softkey.