window list sort order of windows on all workspaces should be per workspace

Hi.

Following situations:

• multiple workspaces
• the window list applet in the panel, which sorts windows from the current workspace from left to right
• the ability of drag&drop windows in the window list, to change their sorting

Now when I have a window (e.g. Window C), which is marked to be visible on all workspaces, and I move it, it will also be moved on other workspaces, relative to their windows, e.g.:

Workspace 1:
[Window A] [Window C]
Workspace 2:
[Window B] [Window C]

Now If I move it on Workspace 2 to the start, i.e.:
Workspace 2:
[Window C] [Window B]
then Workspace 1 will look like this:
[Window C] [Window A]

But the sort order of Workspace one shouldn't have changed.

Cheers,
Chris.

The issue names no files or tests. Reproduce the behavior with multiple workspaces, the window list applet, an all-workspaces window, and drag-and-drop ordering; then trace the applet's workspace-specific sorting and move handling. Done means moving the shared window on one workspace no longer changes its position relative to windows on another workspace.