Hi Obi, the only way I can keep the rounded corners is by selecting the objects and then Object/Close Path. Let me know if this works for you.
Cool! Your trick works fine! .epub file tested on iBooks 1.0.1, ADE 4.0 and Readium (Mac OSX 10.9.3, iPad IOS 7.0.4 and Windows 7).
… Remains for me a disturbing question: How opening a block path solves here an EFL export problem? I don't really see the connection between the two points!
I think you are exporting your images as jpg over here. Please export them as PNGs, this problem should not occur then.
Finally, your approach is not a relevant global solution when you use stroke and wrapping.
OK. It works and obviously avoids the problem above. I take it!
Thanks to all two!