Horizontal-in-vertical (tate-chu-yoko) lacks support, especially for the digits value #53
Description
This issue is applicable to Chinese, Japanese, Korean, and Mongolian.
The CSS text-combine-upright property works with the all value in all major browsers. However, the CSS digits value is not supported by recent version of major browser engines.
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.