Thank you for the feedback for the CSS classes. In general, this is a result of the complexity of the widgets and the big variety of their functionalities.
As for the not working k-window, indeed the selector may be affected by the different custom modifications. I can suggest trying more specific selector to ensure that the k-window selector will affect the desired popup window.
In regards to the second issue, I modified the example, but still, I was not able to observe it. Could you please modify the example and send a screencast demonstrating the issue and the setup, so I can investigate further.
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