[Plugin: Really simple Facebook Twitter share buttons] Facebook comment not possible

Hi, I’m using rsfatsb in version 2.5.1 with WP 3.4.
Bevore update of this plugin the Facebook-Comment-Box when likeing a blog appears and I was able to write something bevor sending my “like”.

Now it is no more possible. Is there something I have to know or is it just a bug?

Thx in advance for any help,

Vince

P.s. my board: https://www.blogperle.de (if necessary)

https://www.ads-software.com/extend/plugins/really-simple-facebook-twitter-share-buttons/