User Agent: Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:18.0) Gecko/20100101 Firefox/18.0 Build ID: 20130107224926 Steps to reproduce: When Firefox tells me a restart is needed because of an upgrade, I click on Restart button. Actual results: The locale of Firefox is now English instead of French. If I restart one more time Firefox, the locale is back to French. Expected results: After upgrade, locale should be kept in French.
Do you use mozilla.org binary builds or did you upgrade with the packet manager of your distribution ?
I used the packet manager of my distribution. I thought that sometimes I saw the same bug on a stock Firefox on Windows, but I wasn't able to reproduce yesterday.
This can't happen on windows because Windows builds are single language builds. e.g. if you install a german Firefox build you don't have an english in the file.
It might be related to bug 818468.
Raphaël can you still reproduce this on newer Firefox versions?
I will try on next Firefox update.
Thank you, this seems to be fixed.