Hello,
Sorry to hear you are having issues. First, please check if Windows autohide taskbar is disable. If it is not please disable it and try again. To be sure restart explorer.exe.
If it still happen or it already disabled. Please try, uninstall Start11, reboot immediately (important), download latest version available in your account product download page: https://store.stardock.com/myaccount/products . Install it, reboot immediately again. Retest it and report back.
Also, please include few more information.
- Windows full version and OS Build number. Please use Winver.exe.
- Start11 full version numbers.
- Do you have any other application that might interfere with Start11 taskbar control.
- A video showing this issue, might help us understand the issue better.
Thank you,
Basj,
Stardock Community Assistant.