The issue focused around Google Chrome 2.0 Beta build 33.23.37.163 
 
 Chromium 40.21.64.172 
 
 Firefox 52.28.40.134 
 
 Thunderbird 66.20.54.184 
 
 Thunderbird 62.22.61.184 
 
 Thunderbird 60.23.72.187 
 
 Thunderbird 60.24.60.186 
 
 Thunderbird 60.24.70.186 
 
 Thunderbird 60.24.71.186 
 
 Thunderbird 60.24.71.186 
 
 Thunderbird 60.24.71.186 
 
 Thunderbird 60.24.71.186 
 
 Thunderbird 60.24.71.186 
 
 Thunderbird 60.24.@@