It apparently only works correctly on chromium-based browsers.

Appears to mostly work in Firefox, including in the browser tab title, which is funny.

	▲	frizlab 2 hours ago \| parent [-]
		It did not work at all for me on latest Firefox (macOS).

ilaksh 3 hours ago | parent | prev [-]

I am on Chrome on Android and it does not work. Although some of them it's like halfway there.