Open on an iPad a jAlbum homepage albums tab like this, open there album 'Summer' and open the first slide.
You see that the slide is not centered, see screen-shot 'WithTopBar'.
Next close the top-bar, the slide is now centered, see screen-shot 'WithoutTopBar'.
This bug exists already a long time, why is it still not solved?
If it can't be solved, please make the top-bar optional or remove it completely.
Most functions available in the top-bar are available in most modern skins and also in the widget bar (but the widget bar should also be redesigned).