All workspace numbers displayed after creating window on empty workspace in dual-monitor setup

Thanks for this extension, I really like this in combination with pop-shell. Makes Gnome feel quite like i3.

Describe the bug

Gnome is set to a fixed number of workspaces (10) to be shown only on the primary display. A second monitor is connected.
Whenever a new window (A) is opened on an empty workspace on the primary display, while another window (B) is open on the secondary display, all workspace numbers will show up.

They will only disappear again if the window (B) is moved from the secondary to the primary display, or if the extension is disabled and enabled again.

To Reproduce

- Set fixed number of workspace on gnome setting
- Set Gnome to show workspaces only on the primary display
- Open any window on the secondary display
- Go to any empty workspace on the primary display
- Open a window on the primary display

Expected behavior
The numbers should display only active workspace.

Version Information (please complete the following information):

- OS: Fedora 37
- Extension Version: 7
- Gnome Shell: GNOME 43.4
- Windowing System: Wayland