BackHandler doesn't propagate enabled changing

[veyndan]

For example, when running the following composable function:

@Composable
fun Foo() {
  var enabled by remember { mutableStateOf(true) }

  println("enabled = $enabled")
  BackHandler(enabled) { println("Back pressed") }

  LaunchedEffect(Unit) {
    delay(5.seconds)
    enabled = false
  }
}

We get the following output:

13:30:21   enabled = true
13:30:23   Back pressed
13:30:26   enabled = false
13:30:28   Back pressed

Having the initial value be false causes "Back pressed" to never be printed.