In attachment 236176 [details] of bug 135689, move the VO cursor to the link that is under the mask (the red one titled "not clickable with a regular mouse") and press VO+Space (AXPress). In the resulting dialog, press Return or activate the OK button. Dialog is dismissed but VO's focus does not return to the web view. It's stuck in limbo (navigating "Display a menu" text) until you use Tab navigation again or stop interacting with the web view. https://bug-135689-attachments.webkit.org/attachment.cgi?id=236176
<rdar://problem/17961413>