Problem with metadata – Facebook not always finds the feature image

Hello,
since the last update of your plugin, i have strange behavior for facebook.

Facebook not always finds the feature image of my post and not even debugger is working even if i tried it thousand times. Thats not happened always.

Also, after the last update facebook gets as title, the title of the post as shown on the browser (title tag) and not the title of the post (og:title).