My Window Refreshes Back to Projects View

When I have a project opened in a tab, and it has been idle for 3 hours (or so), when I go to modify that project in any way, as soon as I touch any tab, the screen immediately refreshes back to the main all projects view.  This happens repeatedly - if an opened tab has been idle for hours. To give context, when I arrive each morning, I opened up all projects that I need to work on for that day, in a separate tab. This is why some tabs, are idle for hours (because I haven’t gotten to them yet). Nevertheless, I do not expect, Guide CX to refresh the screen back to the all projects view.