JakeWharton/ActionBarSherlock — pull request #645 by Vandalko (2012-10-02 13:21:35+00:00)
Title: Don't call onOptionsItemSelected for fragments in backstack.

In some rare cases(with FragmentTransaction.replace() method) fragment could be in backstack but mHidden flag is still false. I think that this is support library bug but anyway there is easy way to fix that.

P.S. ActionBar changes are optional and used only to extract duplicated code.