Android - Zxing frame is crashed when opening back from the background app and scanning QR code.

[NgocThachThai]

Hi,
I got the issue on Android when I opened the camera for scanning the QR Code, let the application stay on opening camera mode running in the background, and opened any other apps when I came back to the camera frame to continue scanning QR code, the app crashed immediately.
I'm using Zxing.Net.Mobile 3.1.0-beta 2 for Xamarin app and testing on Samsung S20+, Android version 12
Try to find a workaround by using the event to close the Zxing camera before we open back the app from the background but it looks like not existing.