Twilight of the Apprentice - S2-E20
Continuity mistake: Near the end, when Ahsoka runs at Vader, for a split second when he turns around, the part of his mask yet to be sliced off is already missing.
Reika Hayami and the Uninvited Guest - S1-E5
Continuity mistake: The bad guy digs his fork and knife into the juicy steak, and we get a close-up of that. When he forces out a laughter at Kindaichi's statement a couple of shots later, we see the plate changed; the veggies swapped position and the cut does not match. (00:05:30)
Continuity mistake: When Elizabeth starts weeping, her bodysuit is torn above her left breast with a single tear. Post-credits Meliodas asks her to join him; now that torn spot is split in two - the first time the bit of fabric that separates the two spaces was already severed. (00:17:40 - 00:22:30)