I've had occasions where the self checkout has had an issue after scanning something and the staff come over and login and do something and you carry on. It mig

I've had occasions where the self checkout has had an issue after scanning something and the staff come over and login and do something and you carry on. It might only be when you check the receipt later at home that you realise that those carrots or whatever that caused problems were just voided off the bill/never scanned at all but were allowed to be bagged so actually you didn't pay for them. Often the staff look like they are on autopilot and aren't reading anything and just going through their shift on muscle memory so I imagine this happens a lot. Is it stealing if you tried to pay but the staff did something on the machine and it didn't charge you? I don't know.