I found that if I disable the Lightning Add-on Thunderbird works properly again. I'm still not sure if the bug is in Thunderbird or Lightning, though. Do you have Lightning installed? Any other Add-ons?
I found that if I disable the Lightning Add-on Thunderbird works properly again. I'm still not sure if the bug is in Thunderbird or Lightning, though.
Do you have Lightning installed? Any other Add-ons?