There is a bug where the back hair renders above the eye layer when together with facial animations. It only happens with the HeadNormal and it only happens in menus like CharacterEditor and in the portrait (I'm using CustomProtraits), bot not in-game for some reason. Here's the only relevant red error log I'm getting:

XML error: <useHediffAnchor>true</useHediffAnchor> doesn't correspond to any field in type DrawData. Context: <drawData><scaleOffsetByBodySize>true</scaleOffsetByBodySize><useHediffAnchor>true</useHediffAnchor><childScale>0.7</childScale><bodyTypeScales><Female>0.8</Female><Hulk>1.2</Hulk><Fat>1</Fat><Thin>0.78</Thin></bodyTypeScales><defaultData><layer>65</layer></defaultData><dataNorth><rotationOffset>0</rotationOffset><flip>true</flip></dataNorth><dataEast><rotationOffset>0</rotationOffset></dataEast><dataSouth><rotationOffset>0</rotationOffset></dataSouth><dataWest><rotationOffset>0</rotationOffset><flip>true</flip></dataWest></drawData>
UnityEngine.StackTraceUtility:ExtractStackTrace ()
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:Verse.Log.Error_Patch2 (string)
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:Verse.XmlToObjectUtils.DoFieldSearch_Patch1 (System.Type,System.Xml.XmlNode,System.Xml.XmlNode)
Verse.DirectXmlToObjectNew:ResolveFieldForNode (System.Type,System.Xml.XmlNode,System.Xml.XmlNode)
(wrapper dynamic-method) Verse.DirectXmlToObjectNew/DummyTypeToHoldDynamicMethods:ParseAndSetComplexTypeField_SharedBody (object,System.Reflection.FieldInfo,System.Xml.XmlNode,System.Type)
(wrapper dynamic-method) Verse.DirectXmlToObjectNew/DummyTypeToHoldDynamicMethods:ParseAndAddComplexTypeToList_SharedBody (object,int,System.Xml.XmlNode,System.Type)
(wrapper dynamic-method) Verse.DirectXmlToObjectNew/DummyTypeToHoldDynamicMethods:ParseAndSetListField_Verse_PawnRenderNodeProperties (object,System.Reflection.FieldInfo,System.Xml.XmlNode,System.Type)
(wrapper dynamic-method) Verse.DirectXmlToObjectNew/DummyTypeToHoldDynamicMethods:ParseAndReturnDef_Verse_Def (int,int,System.Xml.XmlNode,System.Type)
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:Verse.DirectXmlToObjectNew.DefFromNodeNew_Patch2 (System.Xml.XmlNode,Verse.LoadableXmlAsset)
(wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition:Verse.LoadedModManager.ParseAndProcessXML_Patch1 (System.Xml.XmlDocument,System.Collections.Generic.Dictionary`2<System.Xml.XmlNode, Verse.LoadableXmlAsset>,bool)
Verse.LoadedModManager:LoadAllActiveMods (bool)
Verse.PlayDataLoader:DoPlayLoad ()
Verse.PlayDataLoader:LoadAllPlayData (bool)
Verse.Root/<>c:<Start>b__10_1 ()
Verse.LongEventHandler:RunEventFromAnotherThread (System.Action)
Verse.LongEventHandler/<>c:<UpdateCurrentAsynchronousEvent>b__28_0 ()
System.Threading.ThreadHelper:ThreadStart_Context (object)
System.Threading.ExecutionContext:RunInternal (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool)
System.Threading.ExecutionContext:Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object,bool)
System.Threading.ExecutionContext:Run (System.Threading.ExecutionContext,System.Threading.ContextCallback,object)
System.Threading.ThreadHelper:ThreadStart ()