Component used: Navigation

Version used: 2.8.0-SNAPSHOT

Android versions reproduced on: U

Introduced in https://android-review.googlesource.com/c/platform/frameworks/support/+/2853474

PredictiveBackHandler(currentBackStack.size > 1) { backEvent ->
    inPredictiveBack = true
    progress = 0f
    val currentBackStackEntry = currentBackStack.lastOrNull()
    composeNavigator.prepareForTransition(currentBackStackEntry!!)
    val previousEntry = currentBackStack[currentBackStack.size - 2]
    composeNavigator.prepareForTransition(previousEntry)
    try {
        backEvent.collect {
            progress = it.progress
            logcat("NavHost") { "progress: $progress" }
        }
        inPredictiveBack = false
        composeNavigator.popBackStack(currentBackStackEntry, false)
    } catch (e: CancellationException) {
        inPredictiveBack = false
    }
}

When a regular back is performed, inPredictiveBack will be set to false immediately, causing the AnimatedContent to recompose.

Transition may not complete by the time but will jump to the final state.