Font appearance jumping between light and bold
When I first open thunderbird in the morning, fonts appear bold [as if all unread] then if i quit thunderbird and try again it open with font as light, with only unread email showing as bold.
OS X Yosemite 10.10.3 Thunderbird 31.6.0 UTC/S 5.0.0
This is now happening on another mac with Yosemite installed. It worked for a few days and now not working
When I first open thunderbird in the morning, fonts appear bold [as if all unread] then if i quit thunderbird and try again it open with font as light, with only unread email showing as bold.
OS X Yosemite 10.10.3
Thunderbird 31.6.0
UTC/S 5.0.0
This is now happening on another mac with Yosemite installed. It worked for a few days and now not working