I have a multi select dropdown eg:
As you know, If the user clicked on opt #4 without Cntrl key pressed, then you will only get Opt#4 as the selected option.
If the user clicked on opt #4 with Cntrl key pressed, then all three options will be selected. So all three options will be returned. If you want only Opt#4, then you would need to add a click event handler.