Yes, and this is why I started Duck Duck Go: http://duckduckgo.com/ . Thanks for posting specific cases--they help me immensely. Anyone else have more?
Previously it was equivalent to ("hyphenated word" OR +hyphenatedword). But now it seems to behave almost the same as the unquoted (hyphenated word).
Just to make matter worse, when I tried out my example just now I found that the first result (a wikipedia page) for "hyphenated word" doesn't even include the phrase!