Attachment cleaner After adding attachments you will probably notice that Attachment cleaner doesn't clean your attachments right away. This happens because Attachment Cleaner only runs every minute so try again after waiting for a short while .
Refresh the page after a minute and you should see them removed or renamed as expected!
Try that attachments are renamed/removed accordingly and your comments are updated where needed. If you still don't see any changes you can try asking your administrator to make sure the attachment cleaner job has started correctly.