I believe the web chat does not respect the privacy settings.
I currently have a “Friends” contact setting enabled.
I have accepted a person to friends. That person started messaging me, in the end I’ve unfriended him. The person was still able to message me even though not being my friend. Thus I’ve decided to completely block that person and then something I didn’t expect happened…
I have never seen this before, it must be a chat error or they are just modifying it
But the question is, how can it continue to send you messages if you already blocked it as you say? or unless I’m an exploiter