steps to reproduce

install clean v4 of Ibexa DXP version

Edit content type Landing page and add taxonomy entry field types and publish: whatever, it could be ibexa_taxonomy_entry or ibexa_taxonomy_entry_assignment

Edit a landing page content type.

There is no way to edit/display taxonomy field types in a landing page. None of them are present in landing page edit mode.  The metadat part is not visible/editable

Expected result:

Possibility to edit all content types groups and field types in a landing page, including taxonomy.