Remember scroll position when tab is reloaded in background

Steps to reproduce:

1. Open Monitoring → Overview
2. Scroll down.
3. Focus into another tab, leaving this current tab in "background"
4. Wait for Monitoring → Overview tab reload (default is 30 sec)
5. Then focus back to Monitoring → Overview tab

Result:
Page is scrolled to top, previous scroll position is lost.
Expected:
Scroll position preserved.