Description

When copying plugins from the structure board, the toolbar loses its "Page" menu - potentially other menus too.

Steps to reproduce

Clear steps describing how to reproduce the issue.
Steps to reproduce the behavior:

1. Go to a page's edit mode
2. Open the structure board
3. Click "Copy" in the burger menu for any plugin
4. Observe the toolbar losing menus

Screenshots

Additional information (CMS/Python/Django versions)

The error appears in all current versions of Django CMS: 3.11, 4.1, and develop-4.

Th issue seems to be located in the cms.admin.settingsadmin.get_toolbar view.

Do you want to help fix this issue?

• Yes, I want to help fix this issue and I will join the channel #pr-reviews on the Discord Server to confirm with the community that a PR is welcome.
• No, I only want to report the issue.