My one non profit site affected by this is totally white-hat and well within Google guidelines.
My page title is 67 characters long, in obfuscated form:
abcdef ghijk lmnop qrst uv wxyz abcd e fghij kl mnopqrst uvw xyzabc
On Bing all of that is displayed. On Yahoo it's truncated to this:
abcdef ghijk lmnop qrst uv wxyz abcd e fghij kl mnopqrst uvw ...
The space between the last two words is at 62 characters. The last word (6 characters) is dropped and replaced with the elipse character ( ... ).
