The best example I can think of where the race choices really got stupid to the point of offensive was the first "The Last Airbender" movie where the director race swapped the entire fire nation to Indian, made the water nation white when they probably should have been Innuit or something similar, then chose to mispronounce the main characters name to make it sound more ethnic when the source material was in English, so they knew exactly how it should be pronounced.

Then for whatever reason, people got mad that the main character was white when it was the only character animated in such a way they could be white, and the tribe was a nomadic collection of people making it somewhat possible albeit not relevant to the nation theming of the other nations.

Anyways, this triggered my annual Last Airbender rant, so sorry about that.