The expected behavior upon updating a library (Design System) is that any Figma page using the components from that library would be updated upon reviewing (assuming they were not overridden in some fashion). Since the latest Figma update I have seen numerous library related issues.
Same here: I push a library update, but the updates only show up in some spaces. But a lot of changes don’t show in the design files at all. It has been going on for months now and is becoming increasingly annoying, leading me to contemplate a switch to the competition for my next project even.