Uploaded Attachment goes away while saving posting but wrong saving it finaly

When you write a posting and upload a attachment for this posting, the attachement will be shown under the editor. That ok and work good. If you further want to save this posting for continuing later then there come the message that only title and text will be stored (after clicking on "Yes"). Ok that I have notice but I will continue it rather right now and won`t lose my attachement. I click on the "No" Button to continue writing on my posting but the attachement is away.

In my opinion the atachement must be present after clicking on the "No" button. This problem accours with both Styles: Subsilver2 and Prosilver.