Quoted from the recent Q&A:
There was a change that broke an addon that allowed players to talk cross-faction for RP reasons.
Cross-Faction communication has the potential for toxicity, but it’s very different when there is consent. If you are friends with someone or in a community, you can talk to them.
The team didn’t mean to break the addon, but can’t restore the functionality.
The team is looking at adding the Elixir of Tongues, allowing you to understand the opposite faction for an amount of time.
This may not mean that you can you can see emotes or other TRP profiles as that was unconfirmed. Hopefully there will be a link to the full Q&A so others can see it addressed in full themselves, and as it is a hotfix, they’re aiming to release it in a few weeks, so… keep on the lookout!