You have? Which ones? The only episode I'm aware of that got blatantly edited was the 8/26/85 episode of Super Password. The Ca$hword was "Minstrel", and Gautier gave the clue "blackface". Buzzr lopped out that entire Ca$hword, so it cut to commercial very awkwardly.
Well, there was I believe the self-censoring done by Password Plus or NBC before it went to air where the clue was, I think, "Mafia" and they blacked out the word and all the clues used to get it. It was a very awkward stretch. I can't recall any Buzzr edits besides this mentioned one.
Buzzr has also edited out references to "midget" (on some shows, but not others) as the word has been seen as derogatory, understandably. There is a brand of small car offered on Cullen Price that goes by the name of "King M-----" and each time it appears, Buzzr drops out the audio at its mention.