[Webkit-unassigned] [Bug 236273] New: AX: When updating the isolated tree with a remove and add of the same object, the wrapper is not re-attached

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=236273

            Bug ID: 236273
           Summary: AX: When updating the isolated tree with a remove and
                    add of the same object, the wrapper is not re-attached
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Accessibility
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: tyler_w at apple.com
                CC: andresg_22 at apple.com,
                    webkit-bug-importer at group.apple.com

In AXIsolatedTree::applyPendingChanges, we process node and subtree removals before tree additions. When doing these removals, we detach the object and wrapper from each other. This is fine unless that same object is slated to be added again (e.g. it was moved in the DOM), as we don't always re-attach a wrapper. [WebAccessibilityObjectWrapperBase axBackingObject] will always return nil for objects in this state.

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