[Bug]: Resharing broken

⚠️ This issue respects the following points: ⚠️

• This is a bug, not a question or a configuration/webserver/proxy issue.
• This issue is not already reported on Github OR Nextcloud Community Forum (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

When I try to reshare a file on c.nc.com I see a spinner for ever. When I reload the browser I get a error message that the file couldn't be shared by the new recipient is now in the list.

If I want to unshare it again nothing happens at all when I click on "delete share"

Steps to reproduce

1. Try to re-share a file which was shared with your on c.nc.com
2. You see a endless spinner on the "Share" button
3. After reload the new recipient is in the share list
4. Now try to unshare it again
5. Clicking on "delete share" gets completely ignored

Expected behavior

Re-sharing should be super fast without an error. It is "just" a entry in our share table and maybe in the activity table for three users (owner, person who reshared, recipient)

Nextcloud Server version

31

Operating system

None

PHP engine version

None

Web server

None

Database engine version

None

Is this bug present after an update or on a fresh install?

None

Are you using the Nextcloud Server Encryption module?

None

What user-backends are you using?

• Default user-backend (database)
• LDAP/ Active Directory
• SSO - SAML
• Other

Configuration report

List of activated Apps

Nextcloud Signing status

Nextcloud Logs

Additional info

No response

No files, tests, or entry points are named. Reproduce the resharing and delete-share steps from the issue, then trace the Nextcloud Server sharing flows and their browser behavior; done means resharing completes without a persistent spinner or error and the new share can be deleted.