I know it supports safari and they also say in that same link that it supports Chrome, FF, and Edge and I can confirm the latter 3.
And btw each browser requires its own certificate so installing on one browser and trying to use another doesn't usually work unless each had the install and cert.
I can use FF, Chrome and EDGE at the same time as I did the seperate installs.
Permissions / root have been mentioned in other posts for the MAC in particular.
If I had a mac I could probably be more help but I banned them in this house LOL.
Looks like you are back to reading the mac specific posts.
@enyab thank you for your feedback. Unfortunately your version of MacOS is a bit outdated and we are not supporting it for the online Editor. We suggest you use the Desktop IDE.