Inline elements break cursive shaping

[r12a]

This issue is applicable to text in all cursive scripts.

When elements surround part of a cursive run of text, and apply styling, the results often break the cursive joins. (See the results of trying to colour individual letters in the illustration below – as expected above, unsuccessful below.)

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.

[r12a]

The first comment in this issue contains text that will automatically appear in one or more gap-analysis documents as a subsection with the same title as this issue. Any edits made to that comment will be immediately available in the Editor's draft of the document. Proposals for changes or discussion of the content can be made by following the link to the GitHub issue being used to track this gap and adding comments there.