We have an app which uses the Manatee Works barcode scanner. This scanner is really good except...
On a particular device - a CAT S41, the scanner preview is dull.
On other devices, and with other apps running on the same device, it is fine.
I have narrowed it down to the camera preview, by implementing the Camera Preview as demonstrated here:
This exhibits the same behaviour which is:
We have a demo app from Manatee which does not exhibit this behaviour.
The device is running Android 7.0. Other devices running Android 7.0 don't exhibit the behaviour.
Xamarin.Android.Support.* version 18.104.22.168
The above are the same as the demo app.