Hi Bhuwan
I am Louie, a Microsoft Community member and a fellow Windows 10 user like you. I hope I can help you on your concern.
With the Autohide Taskbar enabled Please try the following:
* Restart the windows explorere in task manager
Step
- Right-click the Taskbar.
- Click the Task Manager option.
- Find Windows Explorer in the list and right-click to bring up a new menu.
- Click the Restart option.
* All icons set to enable appear on the taskbar
Steps:
- Right-click the taskbar to bring up a new menu.
- Click Taskbar Settings.
- Scroll down and find Select which icons appear on the Taskbar and then click.
- Ensure that Always show all icons in the notification area is toggled to On.
* If the Auto-hide settings is still not working. Try disabling the application causing the problem
Steps:
- Click the Start menu.
- Type Notifications & actions into the Cortana search bar.
- Click Notifications & actions.
- Scroll down and find Get notifications from these apps.
- Disable the application causing the problem. If you don’t know which one is causing the issue, disable all of them and then re-enable them one-by-one until you find the culprit.
Please let me know if you need more help.
Sincerely,
Louie