App crashed when switching viewing mode

Expected Behaviour

One should be able to switch from portrait mode to landscape mode or vice versa normally, without crashing the app.

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Actual Behaviour

The app crashed when one switch from portrait mode to landscape mode, and then switch to portrait mode again.

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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.

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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

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Recording of bug

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Posted on Utopian.io - Rewarding Open Source Contributors

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