Screen redraw problems under Leopard?

[Bruce A. Pokras]

A couple of users have reported a strange screen redraw problem with 
my application, Patent Grabber, when they used it under Leopard. At 
times, the entire Patent Grabber window will turn an opaque gray that 
hides all the buttons and fields. This occurs mainly when they leave 
Patent Grabber to use another application and then return. However, 
the reports have also included the problem happening carrying out 
other operations within Patent Grabber, such as bringing up a 
substack or an "answer" dialog.

One user said the issue was partially resolved when I added a 
"resumeStack" handler containing "go to this card" to force a screen 
redraw.

Has anyone seen this behavior under Leopard? There was never any 
problem under Tiger (which is what I use).

Regards,

Bruce Pokras
Blazing Dawn Software
www.blazingdawn.com
mac-stacks at kagi.com