For a few minutes, calendar.icloud.com showed all of its text in Korean around 9 PM PST May 31. I verified this was the case for multiple browsers and confirmed I didn't have Korean installed on either browser or my system. By the time I went to a separate computer to verify, I refreshed and it was all back to English. Here is one page I did NOT refresh and it's title was in Korean [0] (later it became the full page but I refreshed that page ;()

Anyone notice the same thing?

[0] https://imgur.com/a/79rzjtR