When I have the test stack open, there is a widget created on the stack, that is the same name as my 'metadata title'.. Also, when I open the dictionary (and I think any other stack) I get the following lines outputted to the log field in the Extension Builder stack:
6:47 AM: "Failed: <foreign: 0x608001226560>"
"Failed: <foreign: 0x608001233dc0>"