Changes

For some bugs the reporters will tell you that something used to work and doesn't work anymore. These are called regressions. (But first, make sure that it's really only the Thunderbird build that's different between "works" and "doesn't work", and the reporter didn't change 15 other things between testing the new and old Thunderbird build - if he did, that would create major confusion and waste lots of developer time).Flag If it's a real regression, flag these bugs with the "regression " keyword , and it really helps the developers what broke Thunderbirdthen find a regression range. This can be easily found using our [[Thunderbird:Testing/Regression regression instructions]].