Noticed on EU servers with English language setting, but affects multiple regions, but not all language settings. Many ppl mentioned it happens to them and ppl they know.
It happens, for example, right when you press the "Go to Haven" button after login from Ready Room.
(outdated: I will send a bug report later. I have to wait for a timeout, because the feature to reconnect to a crashed session is also broken for me (for longer; separate post). I hope someone else sends a bug report sooner.)
// edit: changed that I got multiple reports from ppl saying it happens to everyone
Also I did more tests: It happens regardless of from where you enter Haven. I tried from Guild Hall exit, from Hall of Heroes exit, from Moorcroft dedicated Haven lift.
When the crash happens, you can still press Esc and log off/quit. (You don't need to kill the client. Therefore, you will go to ready room after you log on again and you can play parts of the game not in haven.)