I have exactly same problem.
Everytime I save settings for e.g. Facebook account, it adds automatically DeviantArt account which I completely don’t use. I don’t understand why it would come from my browser as I don’t use that DeviantArt service at all?
And this happens on all website that I manager for my clients with SNAP installed, so it is a general bug for sure!
It’s happening in all browsers (I’ve tried Chrome, FireFox, Safari, opera)