Unable to delete a file in the file browser

Summary:

Some files are not deleteable in the file browser.

Content (please ensure you mask any confidential information):

When users upload files in the file browser to load in the applicaiton, they may upload a incorrect file. That is why they want to delete it sometimes. For some reason, they cannot do this anymore for some files. Also admin cannot do so.

Is there a security on some files that cannot be deleted?

Version (include the version you are using, if applicable):

25.01.31