Mass "Change Owner" case list-view button not showing on Community?

In our lightning community, we cannot figure out why the mass "Change Owner" button is not showing on a list-view within our community.

---

1. In Case search layouts, the mass "Change Owner" button is enabled.

2. Enabled permissions in the profile created for this community:

• Access to the Case Object
• case management (create, modify)
• access to the Owner Id field

3. Furthermore, even the single "Change Owner" button is available to users on the case layout page

---

What are we missing?