How do I get tinymce to announce iframe title during the first focus?

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Javascript

HTML5

TinyMCE

JS Fiddle of simple TinyMCE implementation.

I am using NVDA screen reader with Chrome.

When I first load (or reload) the page, focus on the textbox at the top, then tab into the TinyMCE editor, it (sometimes) announces, "Section multiline editable blank.", instead of the iframe title, on the first focus (but announces it correctly during subsequent focuses).

I would like it to announce the iframe element title attribute the first time, every time (which is, "Rich Text Area. Press ALT-F9 for menu. Press ALT-F10 for toolbar. Press ALT-0 for help").

What I have tried:

I've tried setting a title in the iframe document (within head), using an aria-live="assertive" element, and using role="alert" (which announces "alert!").