No, that's not normal and it's a safety issue. It likely wasn't set up correctly.
FIX: You need to check the casters (the wheels).
- Make sure each caster is completely seated and secured in its place.
- Ensure all shipping corner posts or other protective packing material have been removed.
IF THAT DIDN'T WORK: The unit must be on a level floor. Check that all four casters are touching the ground firmly. Do not place objects on top of the portable dishwasher or use it on an uneven surface.
HEADS UP: This is critical: Do not abuse, sit on, or stand on the door or dish rack. Do not push down on an open door. This is a tip-over hazard that can result in death, serious injury, or cuts.