We now have some GA data on our current usage of getFirefoxDetails() and it's showing on average 37% of users are falling into the "not accurate" segment, which is a lot more than expected. I think we may not be waiting long enough for the event to return before calling the timeout here: https://github.com/mozilla/bedrock/blob/master/media/js/base/mozilla-client.js#L250 I suggest we increase it to 300ms and we'll compare the data again in a week or so.

Thanks! Sent a PR to do so.

Commits pushed to master at https://github.com/mozilla/bedrock https://github.com/mozilla/bedrock/commit/d2e206983b4979a4c29821b217944a0a9ed06b32 Fix Bug 1253629 - Adjust timeout for getFirefoxDetails() https://github.com/mozilla/bedrock/commit/efb212e1452faa9900d610bf30a9ed9ad7aad4cd Merge pull request #3939 from kyoshino/bug-1253629-details-timeout Fix Bug 1253629 - Adjust timeout for getFirefoxDetails()