RoboHelp 2015: Mobile App — Pinch and Zoom

I am using RoboHelp 2015, and I am trying to create a Mobile App.

However, "Pinch and Zoom" is not working in the Mobile App (.apk) generated for Android—whether or not “Zoom auf iOS-Geräten aktivieren” is enabled in the settings.

(Incidentally, sometimes “Pinch and Zoom” works just fine after toggling a video from within the generated app once between full screen mode and normal view.)

Has anyone faced similar challenges?

Thanks,
Christian