I created a cross-connection query, and as expected, the object explorer shows the 2 connections. But i am unable to click the black triangles to drill down into the tables. When clicking, nothing happens. TDP v4.0.0.624

I created a cross-connection query, and as expected, the object explorer shows the 2 connections. But i am unable to click the black triangles to drill down into the tables. When clicking, nothing happens. TDP v4.0.0.624

Does this only happen with those specific connections? If you chose a different pair of connections, would the drop down arrows work?
Can you open a support case? I would like them to help you turn on logging and send back a support bundle.