[LinearProgressIndicator] Stops after standby and is no longer animated

[michael-winkler]

Description:

I have a LinearProgressIndicator in a dialog with indeterminate set to true.
The dialog opens, and the progress indicator works correctly.
Now, I put the phone into standby using the lock button.
When I unlock the phone and see the dialog again, the progress indicator is no longer animated.

Expected behavior:
I expect it to continue working even after returning from standby and seeing the dialog again.

Source code:

<com.google.android.material.progressindicator.LinearProgressIndicator
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginTop="@dimen/margin_8"
    android:indeterminate="true"/>

Minimal sample app repro:
-

Android API version:
I think all

Material Library version:
com.google.android.material:material:1.13.0-alpha10

Device:
I think all

[manabu-nakamura]

Do you use DialogFragments?
Test12.zip

[michael-winkler]

I use an MaterialAlertDialog:

fun show() {
    val binding = DialogLadenBinding.inflate(LayoutInflater.from(activity))
    with(binding) {
        MaterialAlertDialogBuilder(activity, R.style.DialogRoundTheme).create()
        .apply {
            setView(root)
            setCancelable(false)
            show()
        }
    }
}