Edit: It looks like this issue involves only Japanaese and English text using a iOS Japanese fonts (like Hiragino Kaku Pro)
I searched the forum but couldn’t find anything similar.
It looks like the text leading (space between lines of text) in a multi-line display.newText has different values on iOS6 and iOS7.
In particular, the text leading in iOS7 is very small compared to iOS6.
I’m attaching a screenshot to show you the problem.
