They implemented a feature that is only available in Chromium and not part of the web standards yet. It's no different than websites that would only work on IE 20 years ago because of some proprietary Microsoft thing.
Canada is in a uniquely good position for nuclear, we have a massive domestic supply of uranium and a lot of geographically safe areas to build power plants, plus good access to water for cooling.
They implemented a feature that is only available in Chromium and not part of the web standards yet. It's no different than websites that would only work on IE 20 years ago because of some proprietary Microsoft thing.