A Shaker, who does not keep long tight

Under the blue lid conceals a strainer, which ensures that food supplements powder dissolves better in Shaken. For a while this works flawlessly. However, I was always the items in the dishwasher. Result after a half year use: cup and strainer are warped and the blue lid has a fine crack, penetrates through the Shaken liquid outwards. Perhaps the product is suitable only for Handspüler.