I know this has been requested before but wanted to bring it back up. Sorry to beat a dead horse!
With the app taking a while to boot up, the crash/shut down after completing a ride feels clunky and slow.
Last post I found referencing it but is currently archived:
https://forums.zwift.com/t/return-to-main-menu-on-completion-or-quitting-of-a-ride-workout/2649?u=michael_curry