System: Windows 7 64-bit
Can somebody confirm if this is a bug in the taskbar dock with only 'Running applications'. When an application is minimized, the window of that app is minimized to the icon.
In this example, the icons with a circle have been minimized

But if an application is running and opened, the preview doesn't work. In the example above, Chrome doesn't have a preview because that's where I'm typing this post. Now, most people don't minimize their windows to switch applications, they just switch. But OD doesn't activate the preview iconif another application is selected. So in the example above, if switch from Chrome to Explorer, the Chrome icon will remain the same (no preview). But since I opened Explorer, the preview will stay disabled. So all the previews are eventually deactivated.
Am I missing something and there's a hidden option I can't find? Is this a known bug? If so, is there an update on its status?