174095 2017-07-03 07:38:30 -0700 AX: Voiceover skips elements when js changes aria-hidden and container has many children 2017-07-03 07:39:03 -0700 1 1 1 Unclassified WebKit Accessibility Safari 10 Mac macOS 10.12 NEW InRadar P2 Normal --- 1 rach_mc123456 webkit-unassigned webkit-bug-importer oldest_to_newest 1325119 0 314482 rach_mc123456 2017-07-03 07:38:30 -0700 Created attachment 314482 Test case When using vo+right to select a button which shows/hides some content (by changing display setting and aria-hidden property). If the container has more than around 50 elements, it is impossible to vo+right to the newly shown element. If you remove some of the numbered <p> tags, the issue goes away. Test case attached. 1325120 1 webkit-bug-importer 2017-07-03 07:39:03 -0700 <rdar://problem/33106748> 314482 2017-07-03 07:38:30 -0700 2017-07-03 07:38:30 -0700 Test case index.html text/html 2327 rach_mc123456 77u/PCFET0NUWVBFIGh0bWw+CjxodG1sPgo8aGVhZD4KICAgIDxzY3JpcHQ+CgkKCWZ1bmN0aW9u IHRvZ2dsZUFjY29yZGlvbihlKXsKCQllLnByZXZlbnREZWZhdWx0KCk7CgkJdmFyIGFjY29yZGlv bkNvbnRlbnQgPSBkb2N1bWVudC5nZXRFbGVtZW50QnlJZCgnYWNjb3JkaW9uJyk7CgkJaWYgKGFj Y29yZGlvbkNvbnRlbnQuc3R5bGUuZGlzcGxheSA9PT0gJ25vbmUnKSB7CgkJCWFjY29yZGlvbkNv bnRlbnQuc3R5bGUuZGlzcGxheSA9ICdibG9jayc7CgkJCWFjY29yZGlvbkNvbnRlbnQuc2V0QXR0 cmlidXRlKCdhcmlhLWhpZGRlbicsIGZhbHNlKTsKCQl9IGVsc2UgewoJCQlhY2NvcmRpb25Db250 ZW50LnN0eWxlLmRpc3BsYXkgPSAnbm9uZSc7CgkJCWFjY29yZGlvbkNvbnRlbnQuc2V0QXR0cmli dXRlKCdhcmlhLWhpZGRlbicsIHRydWUpOwoJCX0KCQoJfQogICAgPC9zY3JpcHQ+CiAgICA8dGl0 bGU+UGFnZSB0aXRsZTwvdGl0bGU+CiAgICA8bWV0YSBodHRwLWVxdWl2PSJDb250ZW50LVR5cGUi IGNvbnRlbnQ9InRleHQvaHRtbDsgY2hhcnNldD1VVEYtOCIgLz4KPC9oZWFkPgo8Ym9keT4KICAg IDxmb3JtIGFjdGlvbj0iLyI+CiAgICAgICAgPHA+dm8rcmlnaHQgdG8gbGVnZW5kIGJlbG93PC9w PgogICAgICAgIDxmaWVsZHNldD4KICAgICAgICAgICAgPGxlZ2VuZD5MZWdlbmQgKHZvK3NoaWZ0 K2Rvd24gdG8gZW50ZXIpPC9sZWdlbmQ+CiAgICAgICAgICAgIDxkaXY+CiAgICAgICAgICAgICAg ICA8YnV0dG9uIHR5cGU9ImJ1dHRvbiIgb25jbGljaz0idG9nZ2xlQWNjb3JkaW9uKGV2ZW50KSIg YXJpYS1jb250cm9scz0iYWNjb3JkaW9uIiBjbGFzcz0iYnV0dG9uIj52bytzcGFjZSBvbiBtZTwv YnV0dG9uPgogICAgICAgICAgICAgICAgPGRpdiBpZD0iYWNjb3JkaW9uIiBzdHlsZT0iZGlzcGxh eTpub25lIiBhcmlhLWhpZGRlbj0idHJ1ZSI+CiAgICAgICAgICAgICAgICAgICAgPGEgaHJlZj0i IyI+VHJ5IHRvIFZPLXJpZ2h0IHRvIG1lPC9hPgogICAgICAgICAgICAgICAgPC9kaXY+CiAgICAg ICAgICAgICAgICA8cD4xPC9wPgogICAgICAgICAgICAgICAgPHA+MjwvcD4KICAgICAgICAgICAg ICAgIDxwPjM8L3A+CiAgICAgICAgICAgICAgICA8cD40PC9wPgogICAgICAgICAgICAgICAgPHA+ NTwvcD4KICAgICAgICAgICAgICAgIDxwPjY8L3A+CiAgICAgICAgICAgICAgICA8cD43PC9wPgog ICAgICAgICAgICAgICAgPHA+ODwvcD4KICAgICAgICAgICAgICAgIDxwPjk8L3A+CiAgICAgICAg ICAgICAgICA8cD4xMDwvcD4KICAgICAgICAgICAgICAgIDxwPjExPC9wPgogICAgICAgICAgICAg ICAgPHA+MTI8L3A+CiAgICAgICAgICAgICAgICA8cD4xMzwvcD4KICAgICAgICAgICAgICAgIDxw PjE0PC9wPgogICAgICAgICAgICAgICAgPHA+MTU8L3A+CiAgICAgICAgICAgICAgICA8cD4xNjwv cD4KICAgICAgICAgICAgICAgIDxwPjE3PC9wPgogICAgICAgICAgICAgICAgPHA+MTg8L3A+CiAg ICAgICAgICAgICAgICA8cD4xOTwvcD4KICAgICAgICAgICAgICAgIDxwPjIwPC9wPgogICAgICAg ICAgICAgICAgPHA+MjE8L3A+CiAgICAgICAgICAgICAgICA8cD4yMjwvcD4KICAgICAgICAgICAg ICAgIDxwPjIzPC9wPgogICAgICAgICAgICAgICAgPHA+MjQ8L3A+CiAgICAgICAgICAgICAgICA8 cD4yNTwvcD4KICAgICAgICAgICAgICAgIDxwPjI2PC9wPgogICAgICAgICAgICAgICAgPHA+Mjc8 L3A+CiAgICAgICAgICAgICAgICA8cD4yODwvcD4KICAgICAgICAgICAgICAgIDxwPjI5PC9wPgog ICAgICAgICAgICAgICAgPHA+MzA8L3A+CiAgICAgICAgICAgICAgICA8cD4zMTwvcD4KICAgICAg ICAgICAgICAgIDxwPjMyPC9wPgogICAgICAgICAgICAgICAgPHA+MzM8L3A+CiAgICAgICAgICAg ICAgICA8cD4zNDwvcD4KICAgICAgICAgICAgICAgIDxwPjM1PC9wPgogICAgICAgICAgICAgICAg PHA+MzY8L3A+CiAgICAgICAgICAgICAgICA8cD4zNzwvcD4KICAgICAgICAgICAgICAgIDxwPjM4 PC9wPgogICAgICAgICAgICAgICAgPHA+Mzk8L3A+CiAgICAgICAgICAgICAgICA8cD40MDwvcD4K ICAgICAgICAgICAgICAgIDxwPjQxPC9wPgogICAgICAgICAgICAgICAgPHA+NDI8L3A+CiAgICAg ICAgICAgICAgICA8cD40MzwvcD4KICAgICAgICAgICAgICAgIDxwPjQ0PC9wPgogICAgICAgICAg ICAgICAgPHA+NDU8L3A+CiAgICAgICAgICAgICAgICA8cD40NjwvcD4KICAgICAgICAgICAgICAg IDxwPjQ3PC9wPgogICAgICAgICAgICAgICAgPHA+NDg8L3A+CiAgICAgICAgICAgIDwvZGl2Pgog ICAgICAgIDwvZmllbGRzZXQ+CiAgICA8L2Zvcm0+CjwvYm9keT4KPC9odG1sPgo=