FoW fails to render on Mac with Firefox

[ariakas2008]

As title says, using Firefox on Mac the scene FoW layer of SimpleFog fails to render and leaves the map unfogged:

This doesn't happen if using Brave browser on Mac.
These are the console errors:

[asacolips]

I can also reproduce this issue on macOS with Firefox, though I don't have any errors reported in the console.

[iadawn]

Is this still a thing? I seem to be seeing this still