Portfolio Room - Center grid displays work from contributing Portfolios

Issue Summary

Portfolio Room - Center grid displays work from contributing Portfolios. This seems to be the case for all the 3 tabs - Financials, Resources & Execution

Steps to Reproduce

1. Follow the screenshot for Portfolio - Programs - Teams setup
2. Create an Epic with primary program from Portfolio A and additional programs from Portfolio A & B. Refer screenshot
3. Add a Feature for a program from Portfolio A and parent Epic as created in step #2
4. Add a Feature for a program from Portfolio B and parent Epic as created in steps #2
5. Create an Epic for Portfolio B as shown in screenshot "Epic Owned by B, Shared with A"
6. Add stories for each of the Features
7. Add PI, Epic, Theme budgets as needed along with points estimations
8. Browse to Portfolio Room 
9. Select Portfolio A
10. Observe the work items shown in center grid

Expected Results

Show a warning icon next to any work item that dose not belong a program parented by selected portfolio with hover-over "This work item belongs to a program parented by another portfolio. 

Actual Results

Work from contributing Portfolio is also displayed. In addition, the relevant program progress on right grid is not available. 

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available