Over the past week or so, we've had some users pop up with mysterious Member titles. ("expert", "member", "Enthusiast"). Our default member title is "Member". Only a few of us have custom titles.
These are all recent members. So it's not as though we have some legacy Member title from the Eve days.
I've checked with our team of administrators and nobody remembers doing this manually,
Here's a screen shot of the most recent one.
I've scanned through the previous posts about Activity titles and it appears that they only way those can be applied is through Recipes.
We don't have any recipes that do that.