Earlier it was possible to hide the statusbar (?) [with title page/total, time, battery etc. information] with a tap action.
Now there is no reaction, toolbar is set to be hidden all the time.
Don't know, if the currently available action actually is supposed to do so.
Anyway it would be a great feature to hide any *bar by tap-action.
[Sorry, if I mixed up statusbar and toolbar, its really confusing (the translation makes it even worse...]