eBay- one of the search engines Firefox comes with – has been removed by Mozilla as the company no longer has the permission to use its logo within the browser. This change, which affects both desktop and mobile versions of Firefox, has been landed in Firefox 50. Here are the other search engines you can still use in Firefox browser: Google, Yahoo, Bing, Amazon.com, Twitter, DuckDuckGo and Wikipedia.
No eBay in the Firefox search engines list
Firefox 50 to come with the following changes.
Mozilla Plugin Check page links removed
Not possible to disable system add-ons
Simplify Page feature turned on by default
