Menu and Taskbar is not clickable after opening StartMenu

Hi, I am new to UIPath. Earlier I have done RPA(Automation Anywhere) course, hence learing UIPath too.
I just saw basic video (click Record -> Click Start Menu -> Click calculator -> click 5 + 5 -> Copy result -> click StarMenu -> Click notePad -> Paste the data -> Stop Recording)

This I am trying to do, but once after I click on Start Menu first time, then I am not able to click on any icon in Start Menu and TaskBar.

I am using UIPath - 2018, Studio - 2018.2.4 Community Edition.
Windows 10 Pro

Please help me out with the solution, Thanks in Advance.