I don't know when this started, but now, when I go to edit my profile and look at the "Change Picture" menu, the identicon item's image is different than the identicon I actually get when I select that item. The identicon I actually get is just the same one I have always had since the beginning. It's the "Change Picture" menu's identicon that's changed. I haven't changed my account email. I did add another login method recently, but I thought that isn't related to the identicon.
Here's my "real" identicon image:
And here's the one that shows in the "Change Picture" menu:
I noticed this yesterday.
Why is this happening? Is it a bug? Should I blame caching? (If so, why/how?)
I tried to look for a duplicate question / if a duplicate question existed searching
is:q identicon -[discussion] -[feature-request] -gravatar, but didn't see anything that looked the same.
I did see Why is my profile image different? (2016-08-20), but my user account didn't even exist back then.