Contradiction with Joshua 19:9
This verse explains that Simeon's inheritance was within the territory of Judah because Judah's share was too large. This could be seen as contradictory to the notion of distinct tribal boundaries described in Joshua 19:1.
Joshua 19:9: Out of the portion of the children of Judah [was] the inheritance of the children of Simeon: for the part of the children of Judah was too much for them: therefore the children of Simeon had their inheritance within the inheritance of them.