Issue1 Answer: Try using fullscreen.
Issue2 asnwer: Did u save when added other 4 buttons?
issue3 answer: I dont think there is duplication thingie yet.
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For Issue2 it looks like the aspect ratio in the browser is different than the one in the UI editor. It is probably clipping the buttons on the right side in the browser because it is not as wide as in the editor.
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