Dependencies in Project Screen are invisible until a new dependency is added

Description of problem:
After selecting Dependencies view in Project Screen the Dependencies list appears to be empty. The elements with the data are there on the page but they are not visible. After clicking 'Add' button all dependencies become visible.

Version-Release number of selected component (if applicable):
DR6

How reproducible:
-

Steps to Reproduce:
1. navigate to uf-playground / GuvnorM2RepoDependencyExample2
2. open Project Screen by selecting Tools > Project Editor from the menu bar
3. switch to Dependencies list

Actual results:
The project appears to have no dependencies.

Expected results:
The dependency on GuvnorM2RepoDependencyExample2 should be listed.

Additional info:
See attached screenshot