launchd doesn’t allow XPC services from non-system frameworks to be dynamically added to the WebContent XPC service’s domain.
<rdar://problem/24428418>
Created attachment 273905 [details] Give relocatable WebContent service the domain extension entitlement
Comment on attachment 273905 [details] Give relocatable WebContent service the domain extension entitlement View in context: https://bugs.webkit.org/attachment.cgi?id=273905&action=review > Source/WebKit2/ChangeLog:11 > + engineering builds are ad-hod signed and therefore canât have a private entitlement. I think you mean ad-hoc.
Fixed in <http://trac.webkit.org/r198089>.