I think I've figured it out.
It does have to do with the chain icon. Exactly.
I understand what's happening but I'm not sure how to explain it to you, but you are right, it is that link icon. I also know how to keep it from happening now that I know what's causing it.
I just did a trial/test to check my theory.
My tech vocab is terribly limited, but my mind has grasped the concept so I think all's well now.
Thanks.