Tor Browser still uses duckduckgo.com/html/ as search engine wen you use DuckDuckGo, so you miss all the new stuff when using Tor. I've tried to delete the original DuckDuckGo search engine in Tor Browser and adding the "new" Search Engine, but it didn't work. It basically said that I already had DuckDuckGo as a search engine. Installing the DDG addon didn't work, too. Maybe you could set up the "new" version at duckduckgo.com/html/ since the problem with the canvas doesn't seem to exist any more. Or is there a way to replace the "old" DDG with the "new" DDG in Tor Browser?
I'm sorry if my English isn't very good.