Sticky avatars: posts avatars following scroll

[Steven]

@loic

.topic-post.sticky-avatar {
  .topic-avatar {
    position: relative !important;
  }
}

I spent a bit of time to find the solution by myself the last weekend, but it was here all along

But in my forum, I needed to add top: unset because of some issue on scrolling. So for some users, it might be helpful to use this:

.topic-post.sticky-avatar {
  .topic-avatar {
    position: relative !important;
    top: unset  !important;
  }
}