Why does my machine empty the grounds into my cup

My krurig 2.0 will brew a coffee and right before finishing makes a noise then all of the grounds in the pod empty into my cup. It’s clean when I open the lid but the pod is completely empty of grounds. It doesn’t do it all the time and it doesn’t seem to make a difference on the brand. But I do only use keurig approved pods. I make 2 cups of coffee a day and do the recommended needle maintenance every night. It’s a new machine and the needles are all straight.

I’m going through pods like crazy and just want a good cup of coffee! Help!