[zamadatix]

Igalia picked up the Chromium development, they actually have it in an amazingly good state at this point. This image compares rendering from Chromium with their patches, Safari, and Firefox (in that order) https://mathml.igalia.com/img/mathml-example-gamma.png

That being said I wouldn't hold my breath it'll ship this year either since there is still some work in LayoutNG to be completed at minimum but maybe 2022 we'll all be amazed it finally happened.