Pay button properties (Flowplayer 3) height and width doesn't work - Playbutton is always as big as video size

The Play button on flowplayer 3 is allways as big as the video size (full video size) regardless which values are set at Play button properties width and height (percent or pixel) at /admin/settings/swftools/flowplayer3. That looks not fine - see attached file. All other properties works fine.