Button remains in pressed state if you turn screen lock on/off

[ElsAr4e]

Steps to reproduce (using Mate 20 Pro (EMUI 12) )

1. Tap the widget / or the flashlight icon of the app
2. Now turn the screen lock on
3. Tap the flash light on the lock screen (so it is turned off)
4. Now turn the screen lock off
5. The buttons of widget and the flashlight icon of the app remain in pressed state (although the flashlight is no longer turned on)

If you use the screen's light:

1. Open the App
2. Tap the screen's light button
3. Now turn the screen lock on (by pressing the on/off button)
4. Tap the on the on/off button again
5. Now you can see the bright screen of your phone instead of the lock screen
6. Tap the return button
7. unlock the screen
8. The (additional) screen's light is now disabled