Having the trackback module working well on my site, I am running into an permission issue.

I try to "hide" it entirely from any authenticated user who submits nodes to us.

(Permissions the "edit field_accepts_trackback" and "view field_accepts_trackback" and "administer trackbacks and "change node trackback setting" are all NOT checked for this user).

Giving him NO permissions whatsoever to edit or view the Trackbacks field, does hide the "Allow Trackbacks"-Checkbox from the /node/add form.

However, the textarea - "Send Trackbacks: Enter one URL per line for each trackback you wish to send." field is still visible to the user when he tries to add a node.

Is there a way to control access permissions for the field "send trackbacks" or is this a bug?