Often times when I drag a window between viewports with Rotate Cube on, the window behaves erratically (i.e. freaks out). It does not seem to depend on the type of window being movied between viewports. See the screencapture I made here:
I have verified that this happens with the basic compiz settings by uninstalling and reinstalling compiz as well as deleting my settings. Additionally, other people at fedoraforum.org also confirmed they have this bug.
I use Fedora 7, 32 bit and am using the 0.52 packages. This bug has occurred in every release I have tried of compiz-fusion however.
You can see that many people have this bug by going to the compiz-fusion forum entry about it: http://forum.compiz-fusion.org/showthread.php?t=3214
Is this bug recognized/being worked on yet?
This seems to be fixed in compiz 0.6.0 - thanks