Data says "The Bortas has lost its port shields. It is unlikely they can withstand another hit in that quarter." A moment later the Bortas is hit three times on the port side. It is clear that its shields are still intact.
Worf grabs the ritual blade with his hand. When he removes the hand, red blood is left on the blade. Although Klingons have purple blood in Star Trek VI: The Undiscovered Country (1991), they have red blood in all other Star Trek (1966) productions before and after that, so it is that movie that is in error, not this TV show.
Right after Gowron has been installed as leader of the Empire, as he is walking toward Worf to give him back his honor, in the lower right hand section of the screen you can see Picard throw his hands up (you can only see one hand though) in a "What the" moment.
Gowron states that women may not hold seats on the Klingon High Council yet offered K'Ehleyr a seat on the council in Reunion (1990), and women were shown on the High Council in Sins of the Father (1990).