@lem729: It seems to work fine there. The problem is when typing in a text box in a web page, like when typing in Gmail, or in a comment right here. For whatever reason it doesn't happen on all websites, e.g. Twitter or TweetDeck.

I'm having the same problem for the last few days, in Opera 21 and Opera Next. I habitually press ctrl+backspace all the time when typing sentences as pretty much everything these days handles it for deleting words, so this is driving me mad! I have often had to re-write things several times because I keep forgetting ctrl+backspace does not do what is expected.

It is mind-boggling as to why they would replace this de facto standard keyboard shortcut with a completely unrelated feature. This is a serious regression IMO.