Source Selector Bug 2.6

I have found with CSR Builder 2.6 / CSD 5.7 that source selector does not work correctly. When I use one in my file I get gray background (this agrees with normal operation) but no input list appears. 

Please see attached example from an installation. Any thoughts on correcting this would be appreciated. Thanks, Steve

Hello Steve,

This issue is resolved in the latest release.
Please try CSRbuilder 2.8