Double click on Pop-up window not working

For some reason, double click seems to be not working when I open a new pop-up window. So the application which I am testing have a modal window that list all users. I need to select the first user and double click to load it in parent window.

Somehow the activity is completed without any error, but there is no data selected or loaded. IN fact the pop-up is not even closed which will happen once the value is selected. Can you guys help me out with this issue?

Have you tried using XClick | (locator) | #doubleclick?

If that fails, a screenshot of the situation can be very helpful.

This is browser based website automation. Will try out XClick and see and share the screenshot if issue still persists. Thanks for the reply.