[Bug]: Incorrect mtime

⚠️ 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

I'm updating a text file once a week. I noticed that the last modified time in Files shows Two months ago while I made modifications very recently. Activity confirms the edits.

Steps to reproduce

1. Create a text file
2. Edit the file through Text once a week

Expected behavior

Last modified says A week ago

Nextcloud Server version

30

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

No response

List of activated Apps

No response

Nextcloud Signing status

No response

Nextcloud Logs

No response

Additional info

No response

The issue names no files, tests, or entry points. Start by reproducing the weekly Text edit scenario and inspect how the Files view obtains the last-modified value; done means the displayed time reflects the recent edit and the behavior is covered by a regression test.