When Ryoko spots a mysterious student, he gets up and put his left hand in his pocket. In the next shot, it's out, then back in again.
When Nobuyuki said to Achika "See, I love..." His mouth was still moving, but no words for a second, then he spoke again.
When Washu zoomed on Ryoko and said "Kiyone, show them" then moved back, her mouth was still moving, but no words.
When Washu told Kiyone to show them the main booster, Kiyone said, "Okay" but her mouth didn't move a second later.
When Ryoko was making fun Ayeka on the train, she said "See?" After that her mouth was still moving, but no words.
In both the English and Japanese version, when Tenchi says "Yes" or "Hai" while planning to stop Kain, the words come a second too early before the mouth moves.