DOC-3209: NVDA would announce iframe_aria_text multiple times. (#3836)

* DOC-3209: NVDA would announce iframe_aria_text multiple times.

* Update modules/ROOT/pages/8.1.0-release-notes.adoc

Co-authored-by: CODE:AG <[email protected]>

---------

Co-authored-by: CODE:AG <[email protected]>

Author: kemister85

modules/ROOT/pages/8.1.0-release-notes.adoc

@@ -301,6 +301,17 @@ This improvement addresses the link:https://www.w3.org/WAI/WCAG21/Understanding/
 // #TINY-vwxyz1
 
 // CCFR here.
+=== NVDA would announce iframe_aria_text multiple times
+// #TINY-11296
+
+Previously, in certain browsers, when using screen readers such as NVDA or JAWS, the `iframe_aria_text` was either not announced at all or announced twice, causing inconsistent and potentially confusing behavior for users relying on assistive technology. To resolve this, the behavior has been standardized by adjusting how the label is applied:
+
+* in Firefox, the `title` attribute is now set directly on the iframe element and the `aria-label` on the body is not used.
+* while in other browsers the `aria-label` is applied to the body inside the iframe without setting a `title` attribute on the iframe.
+
+As a result, `iframe_aria_text` is now consistently announced once across all supported browsers.
+
+For more information, see: xref:accessibility.adoc#iframe_aria_text[iframe_aria_text].
 
 === Navigating between elements with `+contenteditable="true"+` was not possible on Firefox using the keyboard.
 // #TINY-12459

modules/ROOT/partials/configuration/iframe_aria_text.adoc

@@ -23,3 +23,11 @@ tinymce.init({
   iframe_aria_text: 'Text Editor'
 });
 ----
+
+[NOTE]
+====
+The `+iframe_aria_text+` option is applied differently depending on the browser to ensure consistent screen reader announcements:
+
+* **Firefox**: The `+title+` attribute is set on the iframe element. The `+aria-label+` on the body is not set.
+* **Other browsers**: The `+aria-label+` is set on the body inside the iframe. The `+title+` is not set on the iframe.
+====