This is just a bug report about something you might want to look at. When there is a update nag or any type of WordPress nag announcement at the top of the page, bootstrap admin only displays a blank space. The nag isn't displayed but the open space is there for it.
I discovered this after deploying the BP compatibility pack and switched to bootstrap before I finished. The nag was still being displayed, but bootstrap wasn't showing it, only the space for it was present.