iPad orientation change ain't pretty (intermittent)

Minor problem (and one that my normal working style won’t exercise too often) but the screen content upon an orientation change on an iPad looks dodgy. I normally use my iPad in landscape mode; wanting the maximum line length for my text when writing. Out of curiosity turned my device through 90º and the effect didn’t look natural compared to the behaviour of other iOS apps on that event (especially Apple’s own apps). The Project pane was left hanging there and there was some corruption of the text (only on screen).

Trying to grab screen shot to show what this looks like the behaviour is now as expeced. Perhaps this is one of occasional bugs that shows after a specific sequenc of actions and events. Will try to poke this bug as I work and catch it in daylight.