Can you point me to the recent license change you mentioned?
They took the closed XPack code and put it into the open source Elastic repo, but under a commercial license. It muddied the waters for anyone looking to use or contribute to the open source.
Now the default install includes X-Pack, and you have to go out of your way (assuming you even realize that there is difference) to install the 100% Apache 2.0 licensed version.