UIO Enhance Inputs not working on block buttons

The User Interface Options preference for "enhance inputs" does not affect the size of the "add block" buttons, despite indicating that it will "[e]mphasize links, buttons, menus, textfields, and other inputs".

To reproduce:
1. Go to https://staging-stories.floeproject.org/storyEdit.html
2. Click "+ show preferences" at the top-right corner
3. Scroll to the rightmost of the UIO panels: "enhance inputs"
4. Click the toggle to set the preference to "ON"

Expected:
All of the elements described in the preference's description are larger, including the "add block" buttons in the Editor

Actual:
None of the "add block" buttons nor the Orator component change size (see screenshots)