Is there a way to listen to focus changes of the window? I tried

val windowInfo = LocalWindowInfo.current
LaunchedEffect(windowInfo) {
    snapshotFlow { windowInfo.isWindowFocused }
        .onEach { println(it) }
        .launchIn(this)
}

but it only prints

false

once and that's that.

windowInfo.isWindowFocused isn't implemented on desktop yet. You can use Swing interop to know if the window is in focus

I just spent an hour playing around with the SwingPanel and the top-level JFrame until I realized your comment had a link 🤦‍♂️ the notification did not show that... Yeah, works great! Now off to a more productive use of my time.. :D