When I call this composable I get two messages: ... Slider onValueChange: 10.0 ... Slider onValueChange: 5.0 I was expecting only one callback, the second one.

@Composable
fun SliderTest() {
    val sliderValue = remember { mutableStateOf(5f) }
    Slider(
            value = sliderValue.value,
            onValueChange = {
                Log.d("Slider onValueChange ", "$it")
                sliderValue.value = it
            },
            modifier = Modifier.width(200.dp),
            valueRange = 0f..10f,
    )
}

The first message is always for the end value in valueRange, 10 in this example. (I'm using Arctic Fox 2020.3.1 Canary 4, built on Dec 23, 2020.)

Both messages should not appear, it is a known bug. See: https://issuetracker.google.com/issues/175943373

Thanks for the quick response. (I'll try to do a better job of finding open bugs next time.)