incorrect error message when trying to sign blank message

[themusicgod1]

to reproduce

1) open editor
2) hit 'sign/verify' to sign the contents
3) select key
4) hit OK and/or login

result:

Signing not possible: bad passphrase or missing key.

of course that's not what's happening at all -- what's happening is there is no input, and it's unclear whether signing or verifying is what's being attempted

kgpg: 4:15.08.0-0ubuntu1
ubuntu: 15.10

ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: kgpg 4:15.08.0-0ubuntu1
Uname: Linux 4.1.0-040100rc1-generic x86_64
ApportVersion: 2.18-0ubuntu9
Architecture: amd64
CurrentDesktop: GNOME
Date: Thu Sep 3 00:12:03 2015
EcryptfsInUse: Yes
InstallationDate: Installed on 2014-07-09 (420 days ago)
InstallationMedia: Ubuntu-GNOME 14.10 "Utopic Unicorn" - Alpha amd64 (20140708)
SourcePackage: kgpg
UpgradeStatus: No upgrade log present (probably fresh install)