/say, /yell, /emote (when not targeting anything) and zone chat (/1 default) don't show in chat or in bubbles above player heads on DW, FB, GB, Hailol, and WB (Laethys and Seastone are good) in Mathosia.

NPC voiceovers and say bubbles remain intact.

Tested in Sanctum, Meridian, Silverwood, Gloamwood, IPP and Stillmoor. None of the above chats showed.

Tested in Tempest Bay, Margle Plaza, and Alittu. All of the above chats showed.