I think I found the problem now.
Actually I didn’t know for sure if it was the plugin or my fault. Turned out the issue occured since I’ve modded the MCE to enable copy&paste of images (which are then decoded from a data:image and uploaded to Amazon S3).
It seems that when I load the post_content into dom objects, I screw up the character coding. My bad!
Consider this one solved, I?ll have to dig into this myself ??
// Br,
// Robert