Looks like we can't reproduce the issue or there's a problem in the test case provided.
Error: namespace is undefined
Designer version tested:
Steps to reproduce the problem:
- When I link a class into another class I get "namespace undefined" error
The result that was expected:
- Create a form panel
- Create a window
- Link panel into the window
- Export your code and execute your application
The result that occurs instead:
- the window showing with the inner panel
- insert alias property into the ui class with magic word 'widget'