OH3 Main UI: Closing page or popup doesn't actually stop the page/popup

In the OH3 main UI, I have numerous places with an image card showing an MJPG video stream. It works beautifully. BUT, when you back out of the page or close the popup of the page, the UI continues to keep the page running in the background pulling video. It doesn’t actually stop until manually hit refresh or close the browser. his is problematic because you end up with multiple video streams running for nothing and it blows up bandwidth, CPU power, etc.

Lazy Load has no impact on this. And this occurs in both edit mode and run mode.

Is there something I can add to the YAML that will force flushing the previous page or flushing the previous popup, or maybe refreshing the current page when you come back to it?