Hoping others have found a similar issue which would help escalate this beyond my ticket (Incident: 140529-000164). I'm finding when doing correlations on a large number of items based on a dependent request, ReportBuilder 5 suddenly begins returning "None" in correlated values after 21 entries.
Checked in Site Catalyst and the correlation data is definitely available. Tried different report suites with exact same results.
This is a pretty major deal for us, as it cripples our primary use of ReportBuilder. I'm afraid my ticket will fall into the "Waiting for Engineering" black hole.