Hello,
Sorry to hear you are having issues. Not really sure your issue here. I believe this is normal behavior for Windows taskbar, with or without Start11. The taskbar tray with all its icons, clock and notification icon will always be on the right side of the taskbar and its size will be different than those on the taskbar itself. Unless you are talking about something else. If you do, please post some screenshot so we can understand the issue better.
Thank you.
Basj,
Stardock Community Assistant.