Question Taskbar problem

[Dat Le]

When I connect the laptop to the external monitor in extended mode, the taskbar on the laptop screen occurs as shown in the video (video is in the link below) while the external monitor does not. I tried switching to
other display modes and all do not encounter the above situation. Hope someone knows what's wrong with it
P/s: I'm using HP Probook 455 G8
https://drive.google.com/file/d/1YsCyDIiJVf1D4pwUMeqz7SwtWzpwpdNl/view?usp=sharing

 

[popatim]

This is a windows issue and this post will be move to our Windows 10 section of the forums.

Right click on a blank part of the task bar and then on taskbar settings. Make sure both options to 'Automatically Hide..." are set to on or off as you frefer.

Did that fix it?