This is an update to my last issue which got closed ("Scroll bar goes off the screen". I forgot about it. Sorry if I'm just meant to udate the old thread).
The scroll bar container in FreeNAS 11.2-U4.1 is not fixed into place. This means that when scrolling and expanding sub-menus the scroll bar can go off the screen. the only way to resolve this issue is to refresh the entire screen. This is probably and issue with screen resolution. The new GUI expects there to be more screen real estate.
My screen is 1366x768. My main brower is Brave but chromium and Firefox are also affected.
This issue is also kind of visible when in desktop mode on my Samsung Galaxy S7. If the scroll bar specifically is dragged you can see the container move. The benefit to mobile though is that you can drag the entire nav menu to scroll. It isn't reliant upon the scroll bar.
First login view
Moving scroll bar container
Scroll bar at the bottom of the page without and sub-menus open.
With a sub-menu expanded
Bar not visible with more sub-menus open.