Expected behavior
When the user selects the "vocabulary" feature and changes the screen rotation to landscape the feature should not be broken or not return to the main page of the application.
Actual behavior
When the user selects the "vocabulary" feature and changes the screen rotation to the landscape, this feature suddenly breaks down or pushes back to the app's main page.
How to reproduce
- Download app in f-droid.
- Run the app.
- select the feature "vocabulary".
- Next Rotate screen to landscape screen.
- unintentionally, Suddenly back to the app's main page.
- Browser: KaQui v1.12
- operation: xiomi redmi 4A Android version of Android: 6.0.1
