Never seen a criminal background check enforced for OA or even health check. The old health was to see if you were bringing STDs into the country which in reality it should be for leaving Thailand. There is so much bullshit posted what you need and most of the time it's not even half. I tell you I never done a criminal background check for OA or health
Not that province, but the police came to visit my house and interview neighbors. Mine was for marriage visa. The police were cool and have seen me before In town. They invited me for drinks . I hear some people never get a visit. It's the luck of the draw.