[Android] Screen flickering when plug in/unplug USB keyboard/mouse

[itlancer]

Problem Description

Screen flickering when plug in/unplug USB keyboard/mouse to Android device. It happens only with AIR applications and interrupt smooth UX in cases when users need to plug in/unplug USB keyboard/mouse.

Tested with multiple AIR versions, even with latest AIR 33.1.1.889 with multiple different Android devices with different OS versions and architectures with different USB keyboards/mouses. Same problem in all cases. It works fine with non-AIR applications. There is no such issue with USB cameras. There is no such issue with Windows/macOS devices. renderMode and containsVideo values no matter.

Related issues (not the same): https://github.com/airsdk/Adobe-Runtime-Support/issues/1194 https://github.com/airsdk/Adobe-Runtime-Support/issues/1003 https://github.com/airsdk/Adobe-Runtime-Support/discussions/706 https://github.com/airsdk/Adobe-Runtime-Support/issues/151 https://github.com/airsdk/Adobe-Runtime-Support/issues/87 https://github.com/airsdk/Adobe-Runtime-Support/issues/6

Steps to Reproduce

1. Launch any AIR application (even "empty") with any Android device.
2. Plug in or unplug USB keyboard/mouse to Android device.

Application example with sources attached. android_peripheral_usb_flickering_bug.zip

package {
	import flash.display.Sprite;
	
	public class AndroidPeripheralUSBFlickeringBug extends Sprite {
		
		public function AndroidPeripheralUSBFlickeringBug() {
			
		}
	}
}

Actual Result: Screen blink with black.

Expected Result: No screen flickering.

Known Workarounds

none