Morph targets are not changing colors in some instances and just not doing anything in others(1.1 in Content Examples - MorphTargets)
The output log is spammed with:
LogMaterialParameter: B material parameter hasn't found on the component /Game/Maps/UEDPIE_0_MorphTargets.MorphTargets:PersistentLevel.SK_Box_Morph_5.SkeletalMeshComponent0
LogMaterialParameter: B material parameter hasn't found on the component /Game/Maps/UEDPIE_0_MorphTargets.MorphTargets:PersistentLevel.SK_Box_Morph_11.SkeletalMeshComponent0
LogMaterialParameter: B material parameter hasn't found on the component /Game/Maps/UEDPIE_0_MorphTargets.MorphTargets:PersistentLevel.SK_Box_Morph_5.SkeletalMeshComponent0
LogMaterialParameter: B material parameter hasn't found on the component /Game/Maps/UEDPIE_0_MorphTargets.MorphTargets:PersistentLevel.SK_Box_Morph_4.SkeletalMeshComponent0
LogMaterialParameter: B material parameter hasn't found on the component /Game/Maps/UEDPIE_0_MorphTargets.MorphTargets:PersistentLevel.SK_Box_Morph_18.SkeletalMeshComponent0
Log and gif included below
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-34077 in the post.