Premiere vs. OS X Spaces

Question

I have my main PP CS5.5 Workspace set up with multiple windows (to span multiple displays, although this bug exists with multiple windows on a single display as well). The workspace is great, but when used in conjunction with Spaces, PP blithely moves my 2nd window to whichever Space I switch to, so my UI is unceremoniously split between two Spaces. To get everything back in the same Space, I have to click in the 2nd window and switch back to the original space. Pain.
The main window (the one with the project path/filename in the titlebar) is not affected, but any other PP windows will all move over to the wrong space. I minimally reproduced this with an empty main window (not even Options, Timeline, or Tools--completely blank), and 2nd window with only an Options or Tools panel.
I can reproduce the problem without the 2nd display (two windows on primary display). This occurred in CS5 as well, but I didn't try to troubleshoot then.
The same problem occurs in AE.
No other app I have behaves like this with modal windows, including other CS5.5 apps (Illustrator, Ps, ID, DW, Flash Pro).
I have tried (or otherwise ruled out):
Keeping my entire UI in one window that spans my displays -- the displays are offset and have completely different geometries.
Setting Premiere Pro to always open in a specific space in the Spaces Application Assignments. This did not help.
Turfing preferences -- I also effectively did this when I reinstalled the OS on a new boot drive. No difference in either case.
The only semi-practical workaround I've found is to only switch Spaces with keyboard shortcuts. This problem only seems to occur when activating the Spaces overview (default F8).
My system is a 2010 12-core Mac Pro (10.6.8). All CS5.5 software is up to date.
Any ideas on how to fix or troubleshoot further?

Answer 1

Bug report submitted, but in the meantime, I came up with a more reasonable (although not simple) workaround. I wrote some AppleScript to switch to Finder if PP or AE currently have focus, before activating Spaces. Here's the code, for anyone running into this issue:
Save the following AppleScript as a .scpt (compiled script). Assumes you have F8 bound to activate Spaces:
-- Activate Finder before activating Spaces if an
-- ill-behaved application currently has focus
-- By coyqueue on Adobe forums, July31/11
-- Return true if an offending application currently has focus
on offenderHasFocus()
    tell application "System Events"
        set fr to (get name of processes whose frontmost is true) as text
    end tell
    fr contains "After Effects" or fr contains "Premiere Pro"
end offenderHasFocus
if (my offenderHasFocus()) then
    tell application "Finder" to activate
    repeat while (my offenderHasFocus())
        # Uncomment if busy-wait interferes with background apps:
        #delay 0.1
    end repeat
end if
tell application "System Events" to key code 100 -- F8
To bind the above script to the mouse button, I went with USB Overdrive, and set up an AppleScript action for mouse button 4:
run script (POSIX file "/path/to/spaces.scpt")
NB: Spaces preference "When switching to an application, switch to a space with open windows for the application" should be turned OFF to avoid zooming to any space that happens to have an open Finder window.