How to solve the problem of flicker on the mobile phone after UE4 packages the Android project

Development Platform & Builds Mobile
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1

I use the official AR template of version 4.22 to pack into Android project, and flip back directly after installation and opening on the mobile phone. But I use the third person template to pack into Android project. Installing and opening on the mobile phone can run perfectly. How should I solve this problem?

2

Please help