QAccessible::updateAccessibility dosen't work properly

Calling QAccessibility::updateAccessibility method doesn't have any effect on the screen-reader.

• for QAccessibleWidget I can see the text funtion being called using qDebug strings, but the screen-reader doesn't say anything.
• for QAccessibleObject nothing happens. It doesn't even look through the hierarchy (it doesn't call childCount or child(int) for the parent)

I added the project that I'm using for testing.