Where did my SSRS Menu Items Go?

SSRS 2016 currently has three Menu display format's, depending on the width of the browser.

They can be summarized with this simple grid:

Browser Width	Has Menu	How Displayed
Narrow	No Menu	None
Medium	Menu	Symbols
Wide	Menu	Name & Symbol

Narrow SSRS Browser Display:

Medium SSRS Browser Display:

Wide SSRS Browser Display