This may be, according to the gdb backtrace, a theme problem. Can you try with other themes that don't use the Oxygen engine ?
Thanks -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/989845 Title: Whenever the mail editor window closes, the whole application crashes To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/claws-mail/+bug/989845/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs