People say Microsoft has no UI taste, but they used to be decent. They had sensible guidelines and behaviors

For example for this case, the taskbar icon would blink three times and then remain highlighted. So it would grab your attention, but not hold it, and then you could still easily see at a glance which app it was

At some point, like many other things, it looks like this either was changed or broke/doesn't work consistently. But I thought it was a nice design