Nextcloud Hub 10 (v 31.0.0) "Allow download and sync" feature (Files) : bugs or features ?

Concerning "allow download and sync" : I would like to be sure to understand how it works :

When unchecked, an internal share recipient (user), should not be able to download and sync from :

• smartphone app
• computer (from the file explorer via desktop sync)
• web UI

Is that right ?

I noticed that when option is unchecked :

• Mobile app (android) : I can't sync (but IMO the "sync" action button should not appear because it creates confusion), AND I can't export (but IMO the "export" action button should not appear because it creates confusion)
• Computer's file manager (desktop sync) : I can sync the shared folder anyway (not tested for a single shared file) ... IMO, shared folder should not appear in the settings window of the desktop sync app (or it should be greyed out)
• Web UI : I can't download from Files or "save as" from Collabora ... but I can "save as" PDF, etc... from "Files" (new Hub 10 feature)

What do you think ? Bug or feature ?

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Start by reproducing the unchecked “allow download and sync” behavior in the Android app, desktop sync client, web Files UI, and Collabora flow described in the issue. Compare each result with the intended restriction and determine whether unavailable actions should also be hidden; done means the behavior is consistent across the listed entry points.