Auto-numbering not displaying correctly in Firefox output

Following the directions Peter posted to his RoboHelp site (https://www.grainge.org/pages/snippets/snippets.htm#:~:text=Adobe,problems%20in%20Firefox), I created a sample project with a topic that had multiple numbered lists using the "counter-reset" parameter. I confirmed that the output showed correctly in Chrome and Edge:

First List

Step 1.

Step 2.

Second List

Step 1. 

Step 2.

And that the lists displayed incorrectly in Firefox:

First List

Step 1.

Step 2.

Second List

Step 1. 

Step 3.

Using Source view, I searched for "counter-reset" and replaced it with "counter-set". I generated the project and then viewed the output in Chrome, Edge, and Firefox.

The lists displayed correctly for all browsers.