Tabs pseudo-refresh when opening after inactivity


When ever I open a tab on mobile after about 15 minutes or more of inactivity, the tab takes about 3-5 seconds to pseudo-refresh the content (red progress bar) but the actual content isn’t usually refreshed. Not only does it take time but sometimes can mess up a form / progress on the current web page.

Is this expected behavior?

OS: Android 8.0.0 / OxygenOS 5.0.3
Brave version 1.0.52, Chormium 67.0.3396.87