I've already mentioned this before, but koreader yet isn't able to handle the apostrophe " ' " in Arabic or Persian names, but always creates a line-break, embedded style on or off makes no difference. Using FW 3.8.0, built 2014.04-675
screenshot
https://cdn.anonfiles.com/1410066330429.jpg
edit: joined GitHub, opened a thread
https://github.com/koreader/koreader/issues/881