Contextual help unavailable in "Add inventory item" form

[hoalex]

NetBox version

v3.0.3

Python version

3.9

Steps to Reproduce

1. Create a new device or select an existing one
2. Click on "Add Components" --> "Inventory Items"
3. Click the Help button in the top right

Expected Behavior

A popup showing contextual help for inventory items should appear.

Observed Behavior

Nothing happens.
Javascript console shows: Uncaught TypeError: this._element is undefined