Is it too much to ask for a technical description?
So there's a plugin in the game that processes text. The company that makes the plugin updated it, which is what caused chat to break. The reason it isn't an easy fix is because the same plugin is used all throughout the game for a bunch of different reasons, so we need to update them all, and if even one of the references is missed or changed incorrectly, it could break something else - hence knowing what the problem is, but it not being easy to fix. They are working on it though.