[Bug-16858]Perspective Dropdown does not render options if first expansion not caused by click

Another issue I face is, when a view is refreshed if I focus on to dropdown component by tab or by enter (instead of clicking by mouse) the dropdown options is not visible.
After a mouse click on the dropdown, options are back to normal.

Attached example. When I move form dropdown component “Veh/ISO TK No” via tab key, “Source” dropdown doesnt display the dropdown options. Have to do a mouse click once.