Cannot modify the user permissions of a shared resource within the same group folder

[oleua]

I have found interesting bug or feature. There's a groupA, members of the groupA: userA1, userA1, userA2, and the group folder with the name "A" assigned to the groupA.

There are other users who are not a part of the groupA, eg userB1. I have a subfolder "A/AA". The groupA would like to share it with the userB1 in the read-only mode. So the userA1 shares "A/AA" with userB1.

In a certain time the groupA decides to change the permissions of a userB1 to the write. The userA2 decides to change them and finds that he/she cannot do this operation, as the permissions of a userB1 are not accessible to him and are grayed in the Share tab.

In my opinion, this is a bug, as other members of the groupA are to be allowed to change the sharing permissions.

So, what to do to allow other members of the groupA to be able to unshare/modify sharing mode of a subfolder of their group folder, which has been shared earlier by another user, who is a member of the same group?

[provokateurin]

This has actually been implemented for Nextcloud 31! Please update to it and re-open the issue if something still isn't working :)

[oleua]

This has actually been implemented for Nextcloud 31! Please update to it and re-open the issue if something still isn't working :)

Thank you for letting me know. Please describe how it was implemented in the last NC version. Is it possible to add the backport to v.30?

I am not ready to upgrade to v.31, as some apps are not compatible with it yet, and the forced compatibility breaks them.

[provokateurin]

Please describe how it was implemented in the last NC version.

For the code checkout nextcloud/server#49073 and #3401.
Basically anyone who has access to a share in a groupfolder can edit and delete it, even if they are not the owner. They need to have the sharing permissions for this though.

Is it possible to add the backport to v.30?

No unfortunately not due technical compatibility reasons.

I am not ready to upgrade to v.31, as some apps are not compatible with it yet, and the forced compatibility breaks them.

I guess your only option is to wait then. You could maybe contact the developers of the apps that are not compatible yet and kindly ask them when they are going to add it.