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cross-referencing IDREFs on aria-labelledby and aria-controls + button with both aria-haspopup and aria-expanded attributes · Issue #476 · w3c/aria-practices · GitHub
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Missing aria-pressed template_preprocess_details() due to lost copied attributes in Attribute [#2605420] | Drupal.org
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Missing aria-pressed template_preprocess_details() due to lost copied attributes in Attribute [#2605420] | Drupal.org
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expanded" and "collapsed" states not announced by screen-reader when using `ui-select` · Issue #2392 · SAP/ui5-webcomponents · GitHub
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accessibility - Accessible HTML: Do I need to use aria-pressed AND aria- expanded on these buttons? - Stack Overflow
ui5-button: aria-expanded not working for screen reader · Issue #1705 · SAP/ui5-webcomponents · GitHub
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