Extended metadata tab not shown although user has the role ROLE_UI_EVENTS_DETAILS_METADATA_VIEW

Steps to reproduce:
1. Configure extended metadata
2. Create unprivileged user that has role ROLE_UI_EVENTS_DETAILS_METADATA_VIEW but not has role ROLE_UI_EVENTS_DETAILS_METADATA_EDIT
3. Open "Event Details"

Actual Results:
You don't see the tab "Metadata II" showing the extended metadata

Expected Results:
You should see that tab

Workaround (if any):
Allow user to edit metadata, then it works