Circle with slash on blocked senders

I can’t seem to find a way to prevent blocked sender’s emails from appearing in my inbox with a circle and a slash through it on the upper right side. I’ve checked Settings, Mail, blocked senders and it already had a checkmark on “send to trash.” I’ve also toggled between the two options, reset again and nothing.

I’ve just recently updated my iPhone. I actually had to update twice, since there were two updates required. I never had this problem prior to the updates, but I do now.

Searching the net has failed to provide a solution, so I was hoping someone here might have the answer. Thank you.