Marketing Status Notification (Single) - View Proposed Marketing Status

For single marketing status notifications we enter proposed changes and receive an green mark.
When we view the proposed changes: the changes are displayed.
However, after viewing the green mark for "Register Marketing Status" is gone and all changes are gone!
No declaration or submission possible.
We have to re-enter all changes to be able to submit.
Therefore, we advise our users not to use the "View Proposed Marketing Status" feature.
This issue has been reported via ServiceNow about a month ago (Incident INC0014127) - no response received.
Please advise if this is a bug or what we can do.