The state religion checks for Hinduism as wonder prerequisite don't exist or don't work. After Hinduism spread to a city of my Korean civilization (Buddhist state religion), I was allowed to build Khajuraho, Wat Preah Prishnulok and Prambanan. I assume that all hinduist wonders with similar restrictions are affected. In the attached savefile the Prambanan is nearly finished. I only noticed that ["State Religion Hinduism" AND "Hinduism or Buddhism"] are requirements when wonder after wonder was enabled upon discovering new techs.