So, I've checked, and this isn't a bug.

This user set a bunch of [combining characters](https://en.wikipedia.org/wiki/Combining_character) in their location field (where users are supposed to enter their 'location') themselves. Like I said in the comments, they're known to be fond of these characters (See the revision history of this [deleted answer](https://meta.stackexchange.com/a/315869/369802) in the formatting sandbox). 

For now, this is just confusing, and it doesn't seem to be breaking anything. <s> I've asked around, and this is one of those things moderators generally don't intervene with, so I'm not going to reset the location field/profile. </s> After a few more people chimed in, it was determined this was enough of a disturbance to reset. So it was.