Created attachment 412579 [details] Screen recording of using VoiceOver navigation to navigate the ARIA tree Steps to reproduce the problem: 1. Start VoiceOver 2. Go to https://codepen.io/toddlr/pen/XWrGrGV 3. Move focus to the ARIA tree instance via tab 4. Use the up and down arrow keys to move focus through the ARIA treeitems 5. Notice VoiceOver does not announce the level/depth of the leaf nodes In contrast, the aria-level IS announced when navigating the ARIA tree using VoiceOver navigation 1. Start VoiceOver 2. Go to https://codepen.io/toddlr/pen/XWrGrGV 3. Press ctrl + option + right arrow 4. Press shift + ctrl + option + down arrow to enter the application 5. Press shift + ctrl + option + down arrow again to enter the "table" (how VoiceOver refers to the ARIA tree) 6. Press ctrl + option + right arrow to navigate through the ARIA treeitems 7. Notice VoiceOver announces the level of each treeitem
<rdar://problem/70783725>
Still seeing this issue in 13.1 Beta (22C5044e)
The cause of this issue is outside of WebKit, so resolving as MOVED. The relevant team is working on the issue under <rdar://problem/70783725>.