Continuity mistake: After Grievous has received R3's message, he assures the dismembered R2 that he will not come to harm. We see R2's head lying on the dissection table with his electronic eye dangling from a cable. When Grievous stands up again, just before his MagnaGuards enter, R2 has his eye back in place. It's a brief shot, so you'll have to be quick to catch that glitch.
Continuity mistake: Ahsoka escapes from General Grievous by cutting his right hand off. When Grievous jumps into his starfighter, he suddenly has his hand back. (00:18:11)
Answer: I would say his death in Phantom Menace was more of a controversy. He was a fan favorite character from the movie, and his fight scene largely regarded as the best part of the movie. It was more he was brought back to please the Star Wars fans and few, if any, had problems with it.
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