When right-clicking on a window's entry in the taskbar, in the "Move to workspace" submenu there is nothing to indicate which is the current workspace.
I think that the applicable entry should be greyed out, i.e. the current workspace should be greyed out, or "All workspaces" should be greyed out if the window is sticky.
I guess the current workspace should also be indicated (by using bold text?), to make it easier if the window is currently sticky.