Text Encryption can not verify signed ascii text

[AlexGenaud]

===
To reproduce
===

$ echo hi > hi

$ gpg -sa hi

Open hi.asc in Gedit.

Select Edit > Decrypt/Verify

Error dialog states: "Couldn't decrypt text ... No data [Close]"

===
Expected
===
Expected to see indication that the signature was valid
as well as the contents of the PGP block in plaintext
(note -sa not --clearsign)

===
Environment
===
$ lsb_release -rd
Description: Ubuntu 11.04
Release: 11.04

$ gedit --version
gedit - Version 2.30.4

$ seahorse --version
seahorse 2.32.0

$ seahorse-agent --version
GPG_AGENT_INFO=/tmp/seahorse-gSjHLu/S.gpg-agent:24605:1; export GPG_AGENT_INFO

$ gpg --version
gpg (GnuPG) 1.4.11