My Vuze app has started using Yahoo as the search engine instead of Bing. All of my personal search engines in my other browsers use Google. How do I change the browser within Vuze? I'm running OS X El Capitain 10.11.1
Try hitting command-, (or from the top menu bar choose Vuze->Preferences)
Then find interface->Display
I think the setting you want is in there under the external browser section I never use the internal browser so I am not certain but that looks like the place to check!
You might need to Mode to Advanced to see that feature . . . I have no idea because I always have it on advanced.