Stacked Windows don't work together with "Always on Visible Workspace"

[brintal]

(1) Issue/Bug Description: When stacking mode (super+s) is activated on a Window which also has enabled "Always on Visible Workspace", then the window disappears when changing to a different workspace. When having "Show Active Hint" enabled in the Pop Shell Settings, the border of the Window is visible after the workspace change, but the content is missing. When changing back to the original workspace, the Window is shown.

(2) Steps to reproduce (if you know):

1. Open Window
2. Right click on the Window Title Bar and Activate "Always on Visible Workspace"
3. Switch to a different workspace
4. Observe that the window disappeared

(3) Expected behavior: Window should be visible on all workspaces. If all Windows in a stack have enabled "Always on Visible Workspace", the whole stack should be visible on all workpaces.

(4) Distribution (run cat /etc/os-release):

NAME="Pop!_OS"
VERSION="21.10"

(5) Gnome Shell version: DE: GNOME 40.5

(6) Pop Shell version (run apt policy pop-shell or provide the latest commit if building locally):

╰─$ apt policy pop-shell
pop-shell:
  Installed: 1.1.0~1643736613~21.10~afb4f12
  Candidate: 1.1.0~1643736613~21.10~afb4f12
  Version table:
 *** 1.1.0~1643736613~21.10~afb4f12 1001
       1001 http://apt.pop-os.org/release impish/main amd64 Packages
       1001 http://apt.pop-os.org/release impish/main i386 Packages
        100 /var/lib/dpkg/status

(7) Where was Pop Shell installed from: came with Pop OS

(8) Monitor Setup (2 x 1080p, 4K, Primary(Horizontal), Secondary(Vertical), etc): 1x1080p internal Laptop Display, 2x 1920x1080 external Monitor

(9) Other Installed/Enabled Extensions:

(10) Other Notes:

[AnthonySLWhite]

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