Cyber Fauna seems to have some problems with CE as the bionic legs will disappear on receiving damage.

Exception ticking hediff (CFBionicAniPawHed rear left leg ticksSinceCreation=26174) for pawn AA_Skiphound13767139. Removing hediff... Exception: System.NullReferenceException: Object reference not set to an instance of an object
at CombatExtended.Verb_MeleeAttackCE+<DamageInfosToApply>d__29.MoveNext () [0x005c6] in <7074a17a00d9460280484863eb24f57e>:0
at CombatExtended.Verb_MeleeAttackCE.ApplyMeleeDamageToTarget (Verse.LocalTargetInfo target) [0x00054] in <7074a17a00d9460280484863eb24f57e>:0
at CombatExtended.Verb_MeleeAttackCE.TryCastShot () [0x00443] in <7074a17a00d9460280484863eb24f57e>:0
at (wrapper dynamic-method) Verse.Verb.Verse.Verb.TryCastNextBurstShot_Patch1(Verse.Verb)
at Verse.Verb.VerbTick () [0x00055] in <81af9f8a18324e17b286924a43555a7c>:0
at (wrapper dynamic-method) Verse.VerbTracker.Verse.VerbTracker.VerbsTick_Patch0(Verse.VerbTracker)
at (wrapper dynamic-method) Verse.HediffComp_VerbGiver.Verse.HediffComp_VerbGiver.CompPostTick_Patch0(Verse.HediffComp_VerbGiver,single&)
at Verse.HediffWithComps.PostTick () [0x00024] in <81af9f8a18324e17b286924a43555a7c>:0
at (wrapper dynamic-method) Verse.Pawn_HealthTracker.Verse.Pawn_HealthTracker.HealthTick_Patch0(Verse.Pawn_HealthTracker)
UnityEngine.StackTraceUtility:ExtractStackTrace ()
(wrapper dynamic-method) Verse.Log:Verse.Log.Error_Patch2 (string)
(wrapper dynamic-method) Verse.Pawn_HealthTracker:Verse.Pawn_HealthTracker.HealthTick_Patch0 (Verse.Pawn_HealthTracker)
(wrapper dynamic-method) Verse.Pawn:Verse.Pawn.Tick_Patch1 (Verse.Pawn)
Verse.TickList:Tick ()
(wrapper dynamic-method) Verse.TickManager:Verse.TickManager.DoSingleTick_Patch5 (Verse.TickManager)
Verse.TickManager:TickManagerUpdate ()
(wrapper dynamic-method) Verse.Game:Verse.Game.UpdatePlay_Patch3 (Verse.Game)
Verse.Root_Play:Update ()