Often a sign of a growing clog. The door doesn’t unlock until the water sensor says there is no water. If the last bit of water is draining slowly, it can delay unlock.

Three places to check a front loader:

1. The rubber gasket for the door has small holes in the folds that get clogged.

2. The lint/large item trap is getting full. Most washers have a little door you can open and pull that out for cleaning.

3. Worst is there’s a ball in the drain hose at the bottom of the tub where the tub connects to the drain pump. It works as a check valve. It can get clogged. You need to get access to the motor area of the washer. Often massaging that ball in the hose is enough to let it drain. I’m fully aware of what this sounds like.