Please tell us some basic information before asking for help:
Model Name: ROG 2 Global
Firmware Version: Latest
Rooted or not: Never
Frequency of Occurrence: Aways
APP Name & APP Version (If your issue relates to the app):
In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.
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Display Burn-in because black navigation bar of default dark theme. Classic theme prevents this by changing icons and buttons colors dinamically.