Facebook iOS SDK dialog for feeds does not display properly

I am using Facebook iOS SDK's dialog method for feeds. I am setting, the name, caption, description, link and picture. When I display the dialog, the following display issues occur:

1. The "Cancel" and "Share" cover part of the text. When I try to scroll the dialog, these buttons scroll, too. Therefore, the covered text can never be seen.

2. The application's icon (the one before the text "via AppName") just appears as a question mark inside a blue box.

Is anyone else experiencing these issues? And is there any workaround for these?

Thanks!