Icons Missing
Sometimes the task bar items are missing their icon. See, for example, this screen shot:

The fourth position from the left is blank but there is an app there. If I click on it, the app will start and the icon will now be visible. The sixth position represents a minimized, running app (see the tiny mark at the bottom) whose icon is missing. If I restore that app, the icon will be refreshed.
Is this a known bug? Is there a fix?
OS Details:
Edition: Windows 11 Home
Version: 21H2
OS Build: 22000.675
