.panel-collapse with .list-group-item.active adds border radius
Created by: zacechola
jsbin: http://jsbin.com/wumoyi/1/edit?html,output
.list-group-item:first-child
and .list-group-item:last-child
removes the borders, but they're added back in by ..panel>.panel-collapse>.list-group:last-child .list-group-item:last-child
and it's first-child companion.
This doesn't seem to happen in a normal panel with a list group.
The reason isn't jumping out at me right now.