UI: Patient Portal v6.0.0(2): iPhone: Hamburger menu does not work

Situation
UI: Patient Portal v6.0.0(2): iPhone: Hamburger menu does not work (does nothing). For example, patients are not able to access the Reports menu item. No problem on a laptop computer.

OpenEMR Version
I’m using the OpenEMR version 6.0.0 patch 2

Browser:
I’m using: Safari, Firefox, or Chrome (latest versions).

Operating System
I’m using: AWS OpenEMR Cloud STANDARD