Chrome Accessibility Tree and Platform Accessibility APIs: Should Shadow DOM Boundaries Be Flattened for Assistive Technology Consumption?
Current Encapsulation Behavior Chrome's accessibility tree construction currently preserves Shadow DOM encapsulation boundaries by default, exposing shadow-internal nodes to platform accessibility APIs (UIA, AT-SPI, AXAPI) only when they are slotted into light DOM or explicitly referenced via aria-owns or aria-activedescendant . This behavior diverges from F
