title: Could not open android app with release with Flutter beta 1.25.0-8.1.pre
body: <p>I've recently updated Flutter to 1.25.0-8.1.pre in beta. I could run <code>debug</code> apk and build <code>release</code>. But, the <code>release-apk</code> doesn't work and it stuck on default splash screen. Where the problem lies in. Is there any such bug from Flutter?</p>
  <p><code>flutter doctor:</code></p>
  <pre><code>Doctor summary (to see all details, run flutter doctor -v):
  [✓] Flutter (Channel beta, 1.25.0-8.1.pre, on Linux, locale en_US.UTF-8)
  [✓] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
  [✓] Chrome - develop for the web
  [✓] Android Studio
  [✓] IntelliJ IDEA Community Edition (version 2020.3)
  [✓] VS Code (version 1.52.1)
  [✓] Connected device (3 available)
  
  • No issues found!
  </code></pre>