Contradiction with Genesis 36:10
Genesis 36:11 lists the sons of Eliphaz, a son of Esau, which were born before Genesis 36:9; hence, Genesis 36:10 could be seen as contradictory because it suggests Esau's genealogy separate from his descendants.
Genesis 36:10: These [are] the names of Esau's sons; Eliphaz the son of Adah the wife of Esau, Reuel the son of Bashemath the wife of Esau.
Contradiction with Genesis 26:34-35
These verses mention Esau's wives and his bitterness towards his parents, which contrasts with Genesis 36:11 where his descendants are discussed with no mention of familial strife.
Genesis 26:34-35: And Esau was forty years old when he took to wife Judith the daughter of Beeri the Hittite, and Bashemath the daughter of Elon the Hittite: