In my experience LO will update the other pages only if you got an object updated which is shared between all pages (there is an "appear on each page" (or something like this) tick in the LO layer menu). In theory one could setup a dummy layer which would trigger all page update in theory
In my view current LO behavior with updating page by page is ok because you don't want your machine to crash on a heavy model of a city precinct updating 10+ pages of elevations with shadows etc. For smaller models its ok though.