Description of Problem:
Sometimes (not always and not even ofter), the kpat window has "clutter"
when cards are moved around.  The "clutter" is the old card images.

Version-Release number of selected component (if applicable):


How Reproducible:
Sometimes occurs but when it does it will last until the card back/front is
changed.

Steps to Reproduce:
1. run kpat until it occurs
2. 
3. 

Actual Results:
clutter

Expected Results:
no clutter

Additional Information
Minimize, restore window will remove existing clutter but it will persist
creating new clutter.

Change the card back has not effect on the clutter.

Chaning the front does.