Yea I spotted an error with Sardonyx. Look at her top left and right hands when watching the episode cry for help and friend ship. You'll see it too. I wonder if any of the crewniverse noticed it and informed Rebecca Sugar about it.
her hands that are connected to her shoulders can be seen with an error. Her white gloves extend (connect) to her middle finger but in a couple or so scenes they are not connected at all leaving a white looking finger by itself.