After a long time watching, I did finally see the balloons appearing on the circus stages, but they are buried in the far right margin of the screen. I usually only see a tiny sliver of color crawling up the side of the screen; when there is more of the balloon visible, it's buried under the Settings/Achievements/Rock&Roll buttons.

Either type of balloon is impossible to hit. Any advice? Is there a way to hide the buttons for a while, or to widen the stage somehow?