Sorry to read that didn't help. Hopefully the devs check it out. There are currently five reports on the Japanese forums. I couldn't identify any common conditions among them. One of the reports mentions that the issue also occurred on a PlayStation 5. The following are the links:
https://forum.square-enix.com/ffxiv/threads/520972
https://forum.square-enix.com/ffxiv/threads/521069
https://forum.square-enix.com/ffxiv/threads/521071
https://forum.square-enix.com/ffxiv/threads/521083
https://forum.square-enix.com/ffxiv/threads/521114