[SOLVED] FB UI; I Can't post dialog without 'Say something about this'

FB UI; I Can't post dialog without 'Say something about this'

I am having trouble with FB UI and its JavaScript SDK feed dialog. I Can't post on wall message with an empty 'Say something about this' field. I receive a success response after my send, but the message is not displayed on the wall. If I write something in that field, the dialog will be displayed. How to fix this?

I send the dialog like this:

FB.ui(
    {
        method: 'feed',
        name: 'example',
        link: loc,
        picture: src,
        description:description,
        message: 'example',
        actions: {"name":"example", "link": loc},
    },

Solution

You can´t prefill the message field, and it is not allowed to prefill anyway. You must read the platform policy before creating any App: https://developers.facebook.com/policy/

As you can read in the docs, there is no message parameter anyway: https://developers.facebook.com/docs/sharing/reference/feed-dialog/v2.4#params

That being said, if it does not show up on the wall, check your activity log as CBroe commented.