Share a note on Facebook

Hello

I have a FANPAGE where I write notes, and at the end of the notes I add a picture that I can clearly see on my fan page.

Until now there are no problems.

But when my fan share my note they won't get the image added on the note but just the text of the note I wrote.

Why?
What's wrong?

I think Facebook don't search for images added in notes body to include published feed picture