I assume it was edited in. But to be clear to future readers, the bracketed link in grandparent links to a tweet proving they did.

A more direct link to where they admit it (and publicly try to fix the mistake) is this: https://twitter.com/perezbox/status/1011708133960536064

They don't admit to a general pattern of mistakes like this there, they do say they will use this "as a learning opportunity for all our agents. Whether that is because this was genuinely a one off or because this is the only publicized example is unclear.