Any ‘Do every n seconds’ workflows on the page? Using any Plugins with your solution?
Sounds like the browser is losing the connection and so the background process isn’t poling Bubble anymore. I’ve noticed that a page which has been idle a long time (I don’t have an exact time) will no longer automatically refresh the data.
You could add a simple page workflow ‘Do every 5 seconds’ which just uses the ‘Go to page’. Bubble should then grab the latest data without the user seeing the page reload (it knows it is loading the same page so just forces a data refresh).