When I saw that Fizzcube had edited a question, I clicked on it. But in the edit history, it said that Sent_By_Ravens had edited it, and said nothing about Fizzcube. Whaa?
Sent_By_Ravens
http://imgur.com/lwdw813
http://imgur.com/KMhkePP
Basically what happened was Sent_By_Ravens edited the question, then Fizzcube did. But whatever Fizzcube changed does not show up on the list of edits.
That's normally because they only changed tags. Though it may be because the edits were close to each other, I'll have to double check.