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Apps Getting Black application screen while connecting Bluetooth Dongle on Lenovo Tablet

I am trying to connect USB dongle to my Lenovo TB-X505F that time my application showing black screen and also observed that the MainActivity also getting restarted. I add possible configuration changes in the Android Manifest still getting the same problem.

<activity android:configChanges="orientation|uiMode|screenLayout|screenSize|smallestScreenSize|layoutDirection|locale|fontScale|keyboard|keyboardHidden|navigation|mcc|mnc|density"
android:name="org.qtproject.qt5.android.bindings.QtActivity"
android:label="calqlatr"
android:screenOrientation="unspecified"
android:launchMode="singleTop">
<intent-filter>
<action android:name="android.intent.action.MAIN"/>
<category android:name="android.intent.category.LAUNCHER"/>
</intent-filter>
 

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