Alexander Slovesnik, who contributes to localizing Firefox for Russia, chimed in a well.
"There is nothing that explains this sudden change of default search engine in Firefox from most popular search provider to some other search provider," Slovesnik wrote, also on Bugzilla. "This situation doesn't help to build credibility and trust in Mozilla among Russian community of Firefox users."
Anderson tried to address those complaints as well.
"Both Yandex and Google are public companies and it is not always possible to share in detail the arrangements and discussions between the parties," Anderson said. "Given these constraints, we did not deem it possible to socialize this with the community in advance as we might normally do. This is an unfortunate reality that we are bound by despite our goal to collaborate with the community as transparently as possible."
Russian users of Firefox 14 and later can change the default Google to another search engine, including Yandex, by accessing the list in the search bar.
Both Anderson and Isaev said that Yandex would continue to develop a customized version of Firefox that sets its own search engine as the default.
Mozilla just updated Firefox worldwide to version 13 last week. Windows, Mac and Linux editions of Firefox 13 can be downloaded manually from Mozilla's site, while current users will be offered the upgrade through the browser's own update mechanism.
Sign up for MIS Asia eNewsletters.