The high caste people considered the Chutiyas as untouchable. So there is a big social gap between the high caste people and Chutiyas. Chutiyas are not allowed to enter through the front side of the Sutras, they are not allowed to take seats with the Bhakata; they are not allowed to collect water directly from public well or tank; they are not allowed to participate in public Bhaanu and public rituals where there are the high caste people. They are not allowed to freely visit the high caste peoples residence and residential area. The high cast people not receive water, food items, piece of betelnut etc. from the Chutiyas. Therefore, the Chutiya people face shyness to contact with the other people. They take to isolatly living. This is the social factor for which the Chutiyas face shyness to contact with other community at large.
But the educated section of Chutiyas have disappearing the shyness nature. It's basically visible among the village people of Chutiyas.