You can clone with
HTTPS or Subversion.
Yes I can confirm this bug too, over Ubuntu 14.04 64bits
Yes, the same for me. Ubuntu 14.04 x64 updated and Thunderbird 31.0. Exact same behaiviour as mentioned by @kajokeji
Same issue on Windows 7 64-bit. As a workaround, you can click the "reply all" link at the top of the message (right next to "show details").
This version worked http://jonathan.xulforum.org/files/gcv-nightlies/201406181438-master.xpi
The version published in Mozilla fix the bug! thanks for the great job!
The 2.8 version is now available from Mozilla and fixes the bug. Thank you for the great and quick job.