This issue has been closed as 'Won't Fix' due to an extended period of time without updates. If this issue is important to you please let us know by posting on the AnswerHub or UDN, and Epic will re-open the ticket for further review.
DrawDebugSphere and DrawDebugAltCone both try to dereference variable 'LineBatcher' without checking for null, as the other DrawDebug functions do.
Use either DrawDebugSphere or DrawDebugAltCone in a CTOR and it will crash while attempting to dereference LineBatcher.
There's no existing public thread on this issue, so head over toAnswerHub just mention UE-30213 in the post.