How do event listeners work on conditionally rendered items?

I’m updating a UI only field in a snippet. The UI only field is a checkbox used to conditionally render a button contained in a pop up. However, the button doesn’t render or unrender when the snippet runs even though I verified that the UI only field value was correct.

When I close and reopen the pop up (rerunning the render logic?) the button is rendered as expected. 

What event is causing the button to rerun its render logic? How can I replicate this in snippet so that my button will render correctly without having to close and reopen the pop up?