Thanks jackie_w!
Yes, there are very few readers/apps/devices that support the FULL ePub standard, some definitely better than others. Hopefully the developer of the app/device is continually updating and fixing things as bugs/display issues get reported. If you find an area that kepub doesn’t support then I highly recommend reporting it to the developer; the more reports they get the higher priority fixing it becomes.
You can make reports to Kobo at the following email:
kobo-renderingissues@mail.rakuten.com
On the other hand, Adobe likes to think they do everything perfectly and any problems with their software are because the user isn’t using it properly …
Their ePub renderer ADE is no exception… support for older systems/devices is slim… why, when they can just have you buy the newest version!?!
It is very important for the ebook creator to know the capabilities of their target market’s devices. You can provide alternate styling in your CSS via media queries to handle those sub-standard occurrences.