I was a full time test engineer / QA person for a while. My motto quickly became "nothing ever works".
Pretty much any ticket behind a static copy change would have some problem or oversight. Sometimes even those would (did you account for very narrow view ports?)
Good developers would take this feedback gracefully. "Shit, you're right, I need to account for mobile users."
Bad developers would get defensive and upset. "We barely have any mobile users (me: did you check?). Alan already approved so I'm merging. I don't want to waste time on this"