'Advanced settings' for media resources in Atto are not loaded properly when editing

Testing scenario Log in as a user and go to a forum. Click to add a new discussion and verify you see the Atto editor. Click the Insert Media icon. Click the "Audio" tab. Browse and upload an mp3 file from your computer. Insert the media. You'll see the media control in the forum. Save changes. Edit the previous forum post. Select the mp3 control (you may need to use the keyboard to select it, at least that's the way of selecting it in Ubuntu). Click the Atto media button Expand the 'Advanced settings' section. Check the "Show controls" checkbox is the only checkbox in this section enabled. Enable the "Loop" checkbox and Insert media. Select again the mp3 control. Click the Atto media button Expand the 'Advanced settings' section. Check the "Show controls" and "Loop" checkboxes are enabled.