This behavior has been seen before on other systems. It is usually associated with user workflows involving snapshots, reviewing completed injections of a running sequence, or editing a running sequence. A lot of these problems have since been addressed in updates. What revision or OpenLab CDS are you using?
These types of incomplete result sets can be repaired by Agilent support. It looks like this is a client/server system so you can open a Lab Informatics ticket at Agilent Technologies Laboratory Informatics Support Center to have the result set repaired.