I am wondering if when you click with the mouse, is it closing the popover? If so, I would think it might have to do with the popover closing without really exiting the field, or because the field isn't shown after the popover closes, the script trigger might not fire.
It could be something to test, and you can put a script trigger on the popover to prevent closing until your conditions have been met.
Thanks for your response. The popover is staying open when I click the mouse. The trigger is firing as expect, but for some reason not working when exited with a mouse click and works perfect when I use tab/enter (watched it with script debugger). I'm open to any and all suggestions!!
Thanks again for your response Mike,
Awesome, thanks! I'm guessing it has something to do with the trigger being a "pre" event. I'm still unsure on why a keystroke worked and the mouse did not.