Unknownreported this bug
The messages instance.events.life-lost and instance.events.all-lives-lost still have the default [Dungeons] prefix.
The messages instance.queue.dungeon-ready cannot be overwritten (message stays default despite being modified in lang.)
The "Dungeon Ready!" title and the countdown, as well as the "Not all players were ready! Queue cancelled..." and "All players are ready. Entering the dungeon!" message is missing in lang.