Switch To Window belongs to another Application

Hi, I am using Katalon studio 8.6.5.

The desktop application I am testing now is having this function of after clicked on an icon, it would save a PDF file to my local drive, and then open the PDF file in a new browser (Google Chrome) window.
I am able to use Katalon to click the pdf icon so that to open the chrome window with the PDF. However, I am struggling to find a way to switch to the Chrome window to continue perform any action on the PDF. Please suggest if there is anyway for Katalon to jump from testing application to another window belongs to other application. I have tried Windows.startApplicationWithTitle and Windows.switchToWindowTitle it seems not work for such case.

Hi,

I will take a look and find workaround soon