It was intentional. In fact, it is impossible for such a big supermarket and such a chain place to make such a low-level mistake. The only possibility is that they did it on purpose. Why did they dare to do such a thing? It is precisely because their supermarket is already very big that they have made this reputation. Many people already believe in this supermarket, so when they do such things, no one will doubt their things. That's why they rushed to do such a thing. If you are a newly opened supermarket, no one dares to do such a thing, but they will dare to do such a thing only if they win the trust of the people for a long time.
There are policies on the top and countermeasures on the bottom. I don't believe the head of their supermarket would do such a thing. The only possibility is that the bottom employees will do such a thing, because the top leaders can't control the bottom employees, and there are policies and countermeasures. Therefore, it is not that the bottom employees are doing this kind of thing blindly, but that the bottom employees are doing it privately.
Generally speaking, the embankment of a thousand miles, collapsed in the ant nest, super-large supermarket. If you want it to go out of business, it is for this reason that it is normal for lower-level employees to do such little tricks and get overtime. Don't let employees do such things.