Are you talking about the default behavior of the Roku Options overlay? It should override the app-specific behavior of the options/star button when and only when the Video node is in focus.
Edit: you can see some description of this behavior
here. OnKeyEvent() is not fired when the Video node is in focus and the options key is pressed on the remote, because Roku is taking control of the options key to control their overlay.
Your question is a little unclear though—is the problem that this default behavior is
not happening as it should (i.e. the overlay is not appearing) or that the default behavior
is happening (i.e. that roku is taking control of the options button from your app when the Video node is in focus, so that you can't control what happens when the options key is pressed when a video is playing)? The former could be caused by a failure to properly put the Video node in focus or something. The latter is just something that Roku requires you to deal with I think.