I have noticed bp's raised in racks (the ones we have purchased from breeders) tend to stress and strike at the glass for quite a while. Not being able too see out of their cage for so long then all of the sudden having a front row seat to a world much larger than their own takes some adjusting. Once adjusted they do great, they don't even stay in their hides all the time.
I can't help to think the lack of stimulus leaves something to be desired but to each his/her own.