This issue is applicable to Chinese, Japanese, Korean, and Mongolian.

A common way to orient counters for lists in vertical text is to have an upright number with a dot alongside it.

The expected way to achieve this in HTML would be to use the following CSS: li::marker { text-combine-upright: all; }, however this cannot be used because browsers don't support text-combine-upright.

For more details, see this GitHub issue, which is being used to track this gap. Please add any discussion there, and not to this issue.