[Bug]: Deck BUG , copy a Card to other Board ,

⚠️ 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

A very strange error, for example: I copy a tag that is in table A to a table B, then when I check again on table B, the entire content of that tag has nothing but the title.

Nextcloud Server version

31

Operating system

Debian/Ubuntu

PHP engine version

Other

Web server

Other

Database engine version

MySQL

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

Fresh Nextcloud Server install

Are you using the Nextcloud Server Encryption module?

Encryption is Disabled

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. Start by reproducing the Deck card-copy flow from one board to another and inspect the relevant application logs and database records; done means the copied card retains its full content rather than only its title.