In a properly functioning dishwasher, there should not be a significant amount of water left inside the dishwasher after it has drained. Once the dishwasher cycle is complete, the majority of the water should be pumped out and drained away, leaving only a small amount of residual water at the bottom.
However, a small amount of water (usually a puddle or a little moisture) at the bottom of the dishwasher after the cycle is normal. This residual water helps to keep the seals and components lubricated and prevents any potential damage due to dryness. Additionally, some dishwashers have a sump area at the bottom that retains a small amount of water to prevent odors and maintain a moist environment for the next cycle.
If you notice a significant amount of water in the dishwasher after it has drained, or if there is standing water that covers the bottom of the dishwasher, it could indicate a problem. In such cases, it's important to troubleshoot the issue and check for possible problems such as a clogged drain, faulty pump, or a malfunctioning water inlet valve. If you are unsure, it's best to consult the dishwasher's user manual or contact a professional appliance repair service to diagnose and fix the problem.