Expected Behaviour
One should be able to switch from portrait mode to landscape mode or vice versa normally, without crashing the app.
Actual Behaviour
The app crashed when one switch from portrait mode to landscape mode, and then switch to portrait mode again.
Steps to reproduce
Launch Aeon's End on Android 8.0.0
Change from portrait mode into landscape mode by enabling auto-rotate function in the device.
Change back into portrait mode.
Testing Environment
Device: Honor 8 Pro
Model number: DUK-L09
OS: Android 8.0.0
App Version: 1.0
Notes: App downloadable on F-droid
Recording of bug
