Clients are copying ALL files after integrity check - is this normal?

Nextcloud version (eg, 20.0.5): 24.0.1
Operating system and version (eg, Ubuntu 20.04): FreeBSD 13.1
Apache or nginx version (eg, Apache 2.4.25): Apache 2.4.54
PHP version (eg, 7.4): 8.0

I recently performed an integrity check, which did not show any issues, but now my clients appear to be copying ALL files to re-sync, even though there have been no changes to the files. Is this to be expected? Why?

dale@whizzer:/usr/local/www/nextcloud % sudo -u www ./occ --all files:scan
The process control (PCNTL) extensions are required in case you want to interrupt long running commands - see
Starting scan for user 1 out of 4 (dale)
Starting scan for user 2 out of 4 (
Starting scan for user 3 out of 4 (dale_admin)
Starting scan for user 4 out of 4 (ulian)
| Folders | Files  | Elapsed time |
| 11957   | 186167 | 00:16:17     |
dale@whizzer:/usr/local/www/nextcloud %

Fwiw, the integrity check was done while troubleshooting an error when attempting to upgrade to 24.0.2 from 24.0.1 (still unresolved). Upgrade 24.0.1 to 24.0.2 error "The following extra files have been found: dist"

Cannot confirm this behaviour.