G'Kar says of Ta'lon's sword, "That is a k'tok. Once drawn, it cannot be sheathed until it draws blood." But G'Kar saw the same sword drawn earlier, and made no such comment; no blood was shed then.
We did not see it take blood before Ta'lon returned to its sheath, as the trio walked off-screen before he had time to do either.
When Garibaldi talks to Dr. Franklin about trying to get away from a complaining Brakiri, he says "Brakari" instead of "Brakiri". A few moments later, he uses the correct word.