

Reasons for this peculiar behavior can be attributed to change in settings or some other bug. That won't break anything for most users, and you should be able to use the Taskbar as usual. But, it can be unsettling when Taskbar suddenly turns white for no apparent reason.

The Taskbar is always visible unless you have chosen to hide it when not active. It provides a convenient space for switching between open apps or launching new ones from the pinned icons with a click. Most of us click on the Taskbar to access frequently used apps, services, view time, and so on.
