Game window is duplicated across workspaces and sometimes unclickable

[dmac-au]

I have been having this weird issue where I launch a game from Steam in Workspace 2, then switch to Workspace 1 after it loads and the game window moves as well. When I then check there are actually 2 windows, one on each workspace.

I then normally send the second one back to workspace 2, where then it doesn't always allow me to click in the game window.

Today I loaded the game in Workspace 1, then switched to Workspace 2 and the same thing happened. Then I switched to Workspace 3 and the other 2 seem to be working fine, though one window is fullscreen and the other is tiled.

I'm happy to provide any other info or raise the issue elsewhere, if you think it's not compositor related.