If the preview of a page is open in a tab in the Pages app, switching to it from another app doesn't reload/refresh the preview. That's bad especially for previewing changes.

I would expect such tabs to reload their content if switched to from another tab.

Further explanations

This popped up during migration of the Content Translation Module (CTS) to the M5 framework. CTS offers such a "view page" action. Its intention is to be able to quickly verify a translation I just imported for a specific page (and its sub pages). If that page happens to be open in Pages already (which it typically is when I work on it intensily), switching to it doesn't cause the preview to refresh. That's bad because it suggests that nothing has changed on that page since I last checked, whereas it actually has: I just imported a new translation file.