`_includeProtoProperty` is only set on the top-level `WI.ObjectTreeView`, not any of the child `WI.ObjectTreeBaseTreeElement`. As a result, we see "Object prototype" for logs like `{a: {b: {c: 42}}}`.
Created attachment 371122 [details] Patch
Comment on attachment 371122 [details] Patch rs=me
Comment on attachment 371122 [details] Patch Clearing flags on attachment: 371122 Committed r246025: <https://trac.webkit.org/changeset/246025>
All reviewed patches have been landed. Closing bug.
<rdar://problem/51342180>