CMS Image preview don't work, only attachment show in preview
 

Hello, sorry for my english it's not my native language

before i upgrade to 4.06 when i made a new CMS article and add a picture, the picture was shown in the preview and all was fine

now if i make an article with a picture it isn't show in the preview, only attachment picture works

it is a bug ?

PS: when i try to edit old articles where the preview works, if i save them the image dont show in the preview anymore

thanks