Docky Show Desktop Desklet Doesn't Use Icon from System Icon Pack

I have noticed that the show desktop icon does not change regardless of which icon pack you are using. This appears to be the only docklet affected by this issue.

Possible cause:

/usr/lib/docky/plugins/Desktop.dll on Line #2357 - icon="show-desktop.svg@".

I spoke with the creator of the Numix-Circle icon pack and they said they think the problem is the @ at the end of the file name. If so what can be done to solve this problem so custom icon packs display properly for this item?

You can view my issue entry on their github here: https://github.com/numixproject/numix-icon-theme-circle/issues/1307

Info:

Docky 2.2.0-2
Ubuntu 14.04 LTS
X-Org 1.15.1
Intel HD 3000
Cinnamon DE 2.2.13
Mono 3.2.8 (Debian 3.2.8+dfsg-4ubuntu1)