Author expectations around aria-describedby and hidden content: an anecdote

"It's not been shown that authors are more likely to mark content
@hidden and expect it to be rendered than they are to mark content
@hidden and expect it to be hidden. So it's not obvious that we should
expect user agents to try to honor references to hidden content."

http://lists.w3.org/Archives/Public/public-html-a11y/2012May/0046.html

Ahoy! I see an author expecting aria-describedby to exclude hidden
content (whether display: none; or aria-hidden):

http://www.nvda-project.org/ticket/2597

Okay anecotes are not data but still …

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Benjamin Hawkes-Lewis