Expanding on the post here
http://forum.square-enix.com/ffxiv/forums/635#threads/221186

Demonstration video:
http://youtu.be/4Pse0aUycNA

Did more testing and its not just macros, if you even try to just blacklist someone in the chatbox (such as a gil seller) once you hit "yes" to confirm the blacklist you will experience the glitch. Included a better description of the glitch in the video since I am on my phone

Any information besides the fact that it is the ps4 version is irrelevant seeing as I have confirmed the glitch for multiple ps4 users