[Bug]: Label color update is delayed and may temporarily duplicate the label

⚠️ 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

Issue description

When a label is applied to a file for the first time, it is usually displayed in a black/grey color instead of its configured color.

If the label color is then changed, the update is not always applied correctly. In some cases, the label appears twice: one instance remains grey while the other uses the selected color.

After a few minutes, the duplicate label disappears automatically, leaving only a single label with the correct color.

Observed behavior

• First application of a label is often monochrome.
• Changing the label color is not always reflected immediately.
• The label may temporarily appear twice.
• After a short delay (a few minutes), the duplicate disappears and the remaining label has the correct color.

Expected behavior

• The label should be displayed with the correct color immediately after being applied.
• Changing the label color should update the existing label without creating a duplicate.

Steps to reproduce

Observed behavior

• First application of a label is often monochrome.
• Changing the label color is not always reflected immediately.
• The label may temporarily appear twice.
• After a short delay (a few minutes), the duplicate disappears and the remaining label has the correct color.

Expected behavior

• The label should be displayed with the correct color immediately after being applied.
• Changing the label color should update the existing label without creating a duplicate.

Expected behavior

Expected behavior

• The label should be displayed with the correct color immediately after being applied.
• Changing the label color should update the existing label without creating a duplicate.

Nextcloud Server version

32

Operating system

RHEL/CentOS

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

Start by reproducing the label application and color-change flow in the Nextcloud Server interface, checking the existing label update path and the timing of the duplicate display. Done means a newly applied label shows its configured color immediately, changing that color updates the existing label without duplication, and the duplicate does not reappear after a delay.