Custom Fields header is missing from create forms

[atownson]

NetBox version

v3.3.5

Python version

3.8

Steps to Reproduce

1. Create a Custom Field for dcim > Device Role ('Class' in the example below)
2. Click on the create form for a new Device Role

Expected Behavior

The custom field should have the typical Custom Fields header above the created custom field and associated custom field group (if any).

Observed Behavior

The Custom Fields header is missing.

[atownson]

All model create forms with the same behavior: Region Site Group Rack Role Tenant Group Contact Group Contact Role Device Role Platform Manufacturer Inventory Item Role Wireless LAN Group Prefix & VLAN Role RIR Service Template Cluster Type Cluster Group Circuit Type