Updates page blanks while updating Flatpaks
While updating Flatpaks (if you click "Update All" button), the entire updates page intermittently blanks, before being restored each time. While the page is in its blank state, a "checking" spinner is shown in the header bar. The intermittent blanking of the updates page is surprising and not very pleasant.
On the design side, the idea is that the updates list is a transparent "live" view of the current updates state. The idea is that available updates are accurately displayed while updates are downloaded and installed. It is also expected that each section of the updates list ("requires restart", "applications", "device firmware") is independent, so that installing one type of update doesn't affect the presence of the other.
It would be good to use this ticket to figure out to what extent this is possible. If we can't 100% achieve the intended design, UI changes could be made to better-suit the underlying implementation.
This was originally reported as part of #1279 (closed), but I think it deserves its own ticket (Milan provided some technical background there).