Contradiction with 1 Chronicles 12:2
This verse describes the Benjamites as skilled archers, which contradicts with the warfare skills implied in 1 Chronicles 8:19 where the sons of Gera are described, but not as archers.
1 Chronicles 12:2: [They were] armed with bows, and could use both the right hand and the left in [hurling] stones and [shooting] arrows out of a bow, [even] of Saul's brethren of Benjamin.
Contradiction with Judges 3:15
This verse describes Ehud as a left-handed member of the tribe of Benjamin, which contradicts with 1 Chronicles 8:19 that doesn't specify handedness among the Benjamites.
Judges 3:15: But when the children of Israel cried unto the LORD, the LORD raised them up a deliverer, Ehud the son of Gera, a Benjamite, a man lefthanded: and by him the children of Israel sent a present unto Eglon the king of Moab. [a Benjamite: or, the son of Jemini] [lefthanded: Heb. shut of his right hand]
Contradiction with 1 Samuel 9:1-2
This passage describes Kish as a man of wealth and stature, which contradicts 1 Chronicles 8:19 where Kish is simply listed among his brothers without any mention of prominence or wealth.
1 Samuel 9:1-2: Now there was a man of Benjamin, whose name [was] Kish, the son of Abiel, the son of Zeror, the son of Bechorath, the son of Aphiah, a Benjamite, a mighty man of power. [a Benjamite: or, the son of a man of Jemini] [power: or, substance]