wider content inside of titleWindow isn't clipped

Steps to reproduce:
1. compile and run test app(inside TitleWindow, it has a label which is wider than the TitleWindow, longer text not clipped)
2. check the label

Actual Results:

the long label text isn't clipped with the TitleWindow.

Expected Results:
the label text should be clipped by the TitleWindow(as it is the parent container).

Workaround (if any):