I have a dishwasher that does this. It was in the house already, I used it for at least a month wondering why it didn't have a proper place to put cutlery before I tried cleaning the top and realized there was a drawer hidden there!

It's a great feature, but since the dishwasher has a standard height to fit under the counter, it means the bottom rack is a bit shorter than standard and I have to be very careful stacking plates to avoid blocking the washer arm. And there are a few large plates which I'm sure would fit in most washers which I have to wash by hand, like a caveman.

On balance it's a good feature though.

Some dishwashers have an option to change the height of bottom rack by moving upper rack up or down. You should check that, maybe it's you dishwasher too.