IssueTracker

• Steps to reproduce the problem (including sample code if appropriate).
  Run Target 35 apps running on Android 15.
  Call AppCompatDelegate.setDefaultNightMode(MODE_NIGHT_YES/NO).

• What happened.
  Activity/Fragment insets set before are lost.
  Under the hood:
  setOnApplyWindowInsetsListener() does not been called when activity re-creating for views other than window.decorView.
  Maybe Edge-to-Edge of Target 35 does not enforced in this case?

• https://developer.android.com/about/versions/15/behavior-changes-15#window-insets
• https://medium.com/androiddevelopers/insets-handling-tips-for-android-15s-edge-to-edge-enforcement-872774e8839b

• What you think the correct behavior should be.
  Just like Android 5.0 ~ Android 14.
  Call setOnApplyWindowInsetsListener().
  If we set AppCompatDelegate.setDefaultNightMode(MODE_NIGHT_FOLLOW_SYSTEM),
  then it works like charm before.

• Is this a security related issue?
  No

• OS: Android 15 (UE1A.230829.050, Git Hash 12077443)
• Device: AVD Stable 35.2.10-12414864

agp = "8.7.1"

androidxActivity = "1.9.2"
androidxAppcompat = "1.7.0"
androidxConstraintlayout = "2.2.0-beta01"
androidxCore = "1.13.1"
androidxFragment = "1.8.4"
androidxLifecycle = "2.8.6"

Simple sample Android 15 Sample.mov:

override fun onCreate(savedInstanceState: Bundle?) {
    super.onCreate(savedInstanceState)

    setContentView(binding.root)

    // Comment this to hit Android 15 E2E enforcing
    // enableEdgeToEdge()

    ViewCompat.setOnApplyWindowInsetsListener(binding.root) { view, insets ->
        insets
    }

    binding.btnDark.setOnClickListener {
        AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_YES)
    }
    binding.btnLight.setOnClickListener {
        AppCompatDelegate.setDefaultNightMode(AppCompatDelegate.MODE_NIGHT_NO)
    }
}

Here is also one app that can reproduce this issue.
See Android 15 LLD.mov for the reproduction steps.

https://github.com/imknown/AndroidLowLevelDetector