twitter/bootstrap — pull request #6737 by gsmet (2013-01-29 18:55:28+00:00)
Title: Fix tooltip positioning for IE8 broken in 2.3.0

IE8 defines a broken placeholder object getBoundingClientRect which breaks the new getPosition() method introduced in 2.3.0

As height and width are not defined in the getPosition() result, tooltips aren't positioned correctly.

This pull request fixes https://github.com/twitter/bootstrap/issues/6659 .