Share option missing in Canvas Home View in Sandbox

Share option missing in Canvas Home View in Sandbox

Hi,

I've been setting up a Canvas Home View in our Sandbox environment and noticed that the Share option is missing from the three-dot menu on a created Home View Canvas.

Steps to reproduce:
1. Open Sandbox environment
2. Go to Setup → Customization → Canvas → Home View
3. Create a new Home View Canvas and save it
4. Click the three-dot menu (⋯) next to the canvas

Expected behavior: Share option should appear under the three-dots, as shown in the official documentation.
Actual behavior: Share option is not present. Other options are available.

I verified this is Sandbox-specific — the Share option appears correctly in the Production environment under the same three-dot menu.

Is this a known Sandbox limitation for Canvas Home View, or is this a bug? Any workaround would be appreciated.

Thank you!