Created ticket #30421 on Core Trac:
Add ARIA attributes to globally permitted HTML attributes in kses

Mentioned in [30064] on Core SVN:
Add `audio`, `video`, and `track` to `$allowedposttags` (KSES).

Created ticket #29826 on Core Trac:
subtitles added to media are striped for anyone without unfiltered_html ...

Created ticket #29825 on Core Trac:
text or tags within of video shortcode causes editor preview to autoplay

Mentioned in [29534] on Core SVN:
Plugin details: Accessibility improvements

Mentioned in [29348] on Core SVN:
Plugin install: Add missing closing HTML tags.

Created ticket #29090 on Core Trac:
Fix unmatched tags in Plugin Install List Table