Has anyone else had an issue where the web app disappears from the glasses and meta app?

I keep running into an issue where I'll add, let's say YouTube, to my glasses and it works.... but only for a few hours. Once I close the app and set down my glasses for a while, then come back to wear and use the app - it's no longer on the device?? Anyone have a similar issue or at least know the solution to have the web app "persist"?