Web Modules don't appear to be working on MacOS Firefox

[lvalencia]

System info

Desktop
MacOS Catalina Version 10.15.4
FireFox 57.04

Mobile
iPhone 11 Pro v13.31
Firefox Version 24.1 (17574)

So the behavior I'm seeing is that on the Mobile version of the App, the example in "basic-modules" linked to from the ReadMe (https://mdn.github.io/js-examples/modules/basic-modules/) shows up on Mobile but does not show up on the Mac version

It looks like it's making the request but just not doing anything once it gets the file? I'm not sure, I attached some screenshots.

[lvalencia]

was double checking my assumptions, realized that the version of Firefox I was on was behind, did a complete uninstall and re-install (in case something was preventing me from updating to latest), looks good now. Closing the ticket.