My translated post is shared with the original's title

A translation without a Share title of its own is shared with its own title, in its own language. With WPML, the share title is translated with the post, so if the original's words were kept during translation, change them in the translation's Share buttons box. A translation made with WPML's Duplicate starts as a copy of the original, share title and summary included, like the rest of the post: change them there when you translate it. The Share picture is the same on every translation on purpose.