Why is the Wiki Publisher extension not included in latest 4.x builds for Mac?

The release notes simply states that “Mac version doesn’t bundle the mediawiki extension”. Is this due to a bug, licensing, no maintainer, or something else?

It appears that in v4.1.x the Wiki Publisher extension under Mac OS X started causing problems for users of this platform that did not have Java installed (or a valid available install). It was removed from v4.1.3 on 2014-01-23. Related mailing list entry here and commit here.