Tapping the  "MF" square on the screen, does not have any effect. Both AF/MF are turned on in settings.

It seems that scrolling the MF dial works but that is impractical with mapping and hard to see on the screen.
The tapping option works best (...when it works).

I'm not sure where else to check. In previous version the app had an option under "general" setting to to turn MF on....not anymore.

Hi, WalterV. Thanks for reaching out! We're sorry to read about the difficulties you're experiencing. If you haven't tried, we suggest accessing the camera settings and perform a camera reset. Should the problem persists, kindly upload a video describing the issue including both your unit's firmware version and the DJI GO 4 app. Looking forward to your update.