So here is my Question and Request to all!
When i create a Test of Notepad, it was working fine, but when i created other testcase of other Destop Application not working, Katalon Just hold that Screen Section and at the Right of the corner it just showed a black Bar at the Top-Left Area.![2019-11-07_10h12_25|689x460]
Katalon Studio fully supports automation tests for desktop apps written in the following platforms: Universal Windows Platform (UWP), Windows Forms (WinForms), Windows Presentation Foundation (WPF), and Classic Windows (Win32).
Thanks All @duyluong & @Jass
You need to run katalon as Administrator it will resolve your problem