Hi Xlar8or,
I am attempting to reproduce this in the 4.7.2 launcher build, but my AI are moving as they were in 4.6.1 as far as I can tell. Can you show me how your NavMesh properties are set? Also, if you could give me some screenshots of your Behavior Tree and the blueprints associated with your AI, I can use those to build a test case. Any additional information about your project may help.
Cheers!