Wrong language in recent achievements

Question

The "Achievements" menu on Skeptics shows me Russian text near my achievements:

The Russian text is:

Узнайте больше об этом в Справке

Which means:

Learn more about it in Help.

I have checked my profile, and nowhere have I seen any country information or language preference. The help center doesn't to have any information about changing the language of achievements.

I'm located in Germany, and https://www.myip.com/ agrees that my IP address is located in Germany. I don't speak Russian, and my browser doesn't have anything set to "Russian". Thus, I don't see why this text is in Russian. Also, even if Stack Exchange thought I was in Russia, it's a bit weird to have half of the text in Russian and the other half in English...

Answer 1

I experienced this earlier when I joined the Fitness community and answered a question.

(Note: I wasn't sure if this should have been a comment on the original question, rather than an answer, but I don't have sufficient rep to comment and I thought that attaching the image may be useful - apologies if this was not the ideal approach!)

Answer 2

This problem is not fixed. I experienced it just now:

Answer 3

Repeating my observations from my Meta Stack Overflow question:

First, this bug still exists in 2023 so it's over a year old at this point (or perhaps it was fixed and now it's back):

However, this bug only happens on main sites. When I switch over to meta it goes away: