BuddyPress changing all commenter's gravatars to the author's gravatar.

I am using a custom child theme based on sandbox on one of my blogs. Not the main one that uses a BuddyPress theme (of course).

Whenever BuddyPress is active all the Gravatars for every comment show the author's gravatar, instead of the one belonging to the commentor.

Correct Gravatars show when BuddyPress is not active.