I would like to point out that the CP is not properly documented and it changes a lot more than some AI stuff.
I have played with Smart AI and Artificial Intelligence mods and I know those changes are not from those mods, those must be from the CBP that somehow made it into the CP, or were not properly disabled.
You say
"Community Patch (CP)
This version contains only the DLL bugfixes and AI improvements. No balance or gameplay changes are included. New DLL tables, functions and LUA events are included, however they are not used by the mod. All users will need to download this mod!
"
But from playing one game I can tell out of my head that
1) the minimum distance between cities has been changed from 3 to 4 tiles
2) religion pressure has been changed and passive religion pressure from cities is now based of the distance between those 2 cities, the further away, the less pressure (as low as 1 pressure a turn)
3) great people value (scientists, writers) is no longer based of your science/culture value when used, but of the science/culture value when said great people is born
4) great engineers now complete buildings and wonders on the same turn they are used (used to bring the remaining time to 1 turn)
5) some changes made to the forbidden palace or the diplomatic victory condition or the world congress, notably, I was getting 6 delegates from the Forbidden Palace in the Information era instead of 2.
And possibly more.
The CP used to have CBP goody hut ruins tables a couple months ago, and it was changed after I pointed it out, I would not be surprised if a lot more stuff were not properly disabled.