MotionCompose Not Working with RememberSaveable

[rabyunghwa]

I'm referring specifically to the "ToolbarLazyExample DSL" demo project. If I use the rememberSaveable API to save the progress value, which is then passed to the MotionLayout, motion animation doesn't work:

    val progress = 1 - (toolbarHeight.value - minPx) / (maxPx - minPx)
    val motionProgress by rememberSaveable {
        mutableStateOf(progress)
    }
    Column {
        MotionLayout(
            motionScene = scene,
            progress = motionProgress
        ) {

The Toolbar is not moving at all.