When creating an AnimBP with 3 or more layers using linked AnimGraph nodes and going through a state where animation is initialized such as replacing SekeltalMesh, the AnimBP on the 3rd layer is not removed from LinkedInstances of SkeletalMeshComponent. It will leak.
GC didn't fix this issue.
result : Too many instances of ABP_Quinn_C in the log
expected: only one instance of ABP_Quinn_C in the log
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-162961 in the post.