Taskbar button is not selected when window is moved to empty workspace

[gulkily]

1. Open a window
2. Move window to a workspace with no other windows (ctrl+shift+home)
3. Look for selected taskbar button

Expected: There is one new taskbar button, representing the window we moved, and it is selected

Actual: Button is there, but it is in non-selected state.

P.S. thank you for this amazing project, makes me feel more comfortable in my desktop