Shutter switches KDE activity when taking screenshot

[Sparhawk]

Steps to replicate
1) Have 2 or more activities available in KDE.
2) Open Shutter's main window in one activity.
3) Switch activity and use keyboard shortcut to take a screenshot.

Observed result
1) Active activity is switched to the one containing the Shutter window.
2) Screenshot is taken of the incorrect activity.

This occurs whether triggering shutter --full, window, or select.

KDE 4.9.5 (Ubuntu 12.10)
Shutter 0.90 rev.1252 (0.90-1~getdeb1)