I'm probably being dense here, but could you please explain your first image link? Assuming you didn't accidentally link the wrong image, I'm struggling to see how even a not-very-good model would think that's a person, and it doesn't look like a security camera screenshot like your second image does.
Is not the wrong image. I got a notification (thru Home Assistant) because Frigate detected that group of toy horses as a person. I tried to find the image where the box is visible but only found that preview.
Edit: I found a better place to make an screenshot https://imgur.com/a/5qpDWia There you can see the event marked as "Person"
