Nextcloud looses shares on external Storage

Nextcloud version (eg, 29.0.5): 30.0.2
Operating system and version (eg, Ubuntu 24.04): Debian 12
Nextcloud AIO: Latest

The issue you are facing:

On a Nextcloud AIO i have the Problem, that Link or Mailshares get lost in an external Storage.
How i can prevent it?

Is this the first time you’ve seen this error? (Y/N):

Steps to replicate it:

  1. Make a Link of a folder in a External Storage with Enddate 31.12.2024
  2. Share it
  3. After some days ago (in my case often under 1 Month) the Share is lost and not available anymore for the Target User.

The output of your Nextcloud log in Admin > Logging:

Nothing

I have every 15 Minutes a cronjob to scan the External Storage.

Thanks