BlogBuzz and Media Gallery

Hello,

I am using the Media Gallery Modul along with BlogBuzz. Now I am running into the following issue:
On the overview page the galleries are not displayed in rows, but one gallery thumbnail using 100% width of the row, so that all galleries are huge and displayed underneath each other.

This is not the issue with the standard themes. Hopefully you can help me out on this one. Thanks!

P.S. Please find screenshot attached as this is not available on the internet so far.