Media Casting Problem

[she-kelvin]

Similar with #52

current at version 2.0, when I add single image to a non-multiple field, the image is successfully saved in database but cannot show in the frontend and will be removed from database if not adding it again whenever editing when I have the media casting. For multiple field, it works fine.

I tried the approach by @BoiteBeet ( #52 (comment) ) and it works as excepted