twbs/bootstrap — pull request #12533 by 1000hz (2014-02-02 22:56:28+00:00)
Title: Fixes #12532: Tightening up popover arrow css scope to apply only to direct descendant...

Fixes #12532:

If you've got a popover inside of another popover and they've got different placements, the styles for the parent popover arrow will cascade down to the arrow of the child popover.

Here's an example: http://jsbin.com/adIFiWer