Support for @counter-style
Related w3 document:
The Internationalization WG observes that Edge does not pass the tests found here:
See https://www.w3.org/International/tests/repo/results/counter-styles.en.html (click on the large text in the left-most column to run the tests)
Several groups have observed the need for counter style support. The Arabic Layout TF finds that it is needed for Persian support. Richard Ishida reports that vertical text lists require it as well. Firefox is observed to provide this support.
Phake Nick commented
Also needed for Japanese, Chinese, Korean support, see https://bugs.chromium.org/p/chromium/issues/detail?id=687225