Cannot select by clicking text in zenity --list -radiolist

The dialog box I get for this does not allow me to select an item by clicking on it.

zenity --list --text "Pick an Item" --radiolist --column "" --column "Item" TRUE One FALSE Two FALSE Three FALSE Four

If I want to select the item "Two", I cannot click on the text label "Two"; I have to hit the radio button to the left of it. This is inconsistent with how radio buttons generally work, and might wreak havoc (power user clicks and hits Enter, only to realize too late that the click didn't do anything). (Oh, but Enter doesn't worjk as expected, either. Still, a plausible scenario; click label, click OK.)

Besides the inconsistency and error scenario, it is also a usability problem, because the active area you can click on is very small, which will harm users who are not expert mouse operators.

vnix$ $ lsb_release -rd
Description: Ubuntu 10.04.4 LTS
Release: 10.04

vnix$ apt-cache policy zenity
zenity:
  Installed: 2.30.0-0ubuntu1
  Candidate: 2.30.0-0ubuntu1
  Version table:
 *** 2.30.0-0ubuntu1 0
        500 http://mirrors.nic.funet.fi/ubuntu/ lucid/main Packages
        100 /var/lib/dpkg/status