Environment
Situation
The layout view in the BSM client will sometimes not have all the child elements displayed. Users who have permission to alter the layout drawing will see a tab labeled "Unplaced Elements" in the lower left corner containing a list of children that aren't in the drawing. However, this "Unplaced Elements" tab isn't displayed to ordinary users, so they have no way of knowing if the layout drawing contains all the child elements or not.
Resolution
Additional Information
If, after making the change, the Unplaced Elements tab still doesn't show, try clearing the Java cache on the client machine as detailed inTID 7003525 - Can't login to client, get error "JAR-resources in the file JNLP has not been signed by the same certificate.