diff --git a/Build/NuGet/.pack-version b/Build/NuGet/.pack-version
index bcc565f2b49..de1a208d561 100644
--- a/Build/NuGet/.pack-version
+++ b/Build/NuGet/.pack-version
@@ -1 +1 @@
-1.11.18
+1.11.19
diff --git a/lib/Backend/GlobOptBailOut.cpp b/lib/Backend/GlobOptBailOut.cpp
index f168545b3b2..21b0c7753b6 100644
--- a/lib/Backend/GlobOptBailOut.cpp
+++ b/lib/Backend/GlobOptBailOut.cpp
@@ -1204,7 +1204,8 @@ GlobOpt::IsImplicitCallBailOutCurrentlyNeeded(IR::Instr * instr, Value const * s
             NeedBailOnImplicitCallForLiveValues(block, isForwardPass) ||
             NeedBailOnImplicitCallForCSE(block, isForwardPass) ||
             NeedBailOnImplicitCallWithFieldOpts(block->loop, hasLiveFields) ||
-            NeedBailOnImplicitCallForArrayCheckHoist(block, isForwardPass)
+            NeedBailOnImplicitCallForArrayCheckHoist(block, isForwardPass) || 
+            (instr->HasBailOutInfo() && (instr->GetBailOutKind() & IR::BailOutMarkTempObject) != 0)
         ) &&
         (!instr->HasTypeCheckBailOut() && MayNeedBailOnImplicitCall(instr, src1Val, src2Val)))
     {
diff --git a/lib/Common/ChakraCoreVersion.h b/lib/Common/ChakraCoreVersion.h
index c8447b9a39e..5f649c36959 100644
--- a/lib/Common/ChakraCoreVersion.h
+++ b/lib/Common/ChakraCoreVersion.h
@@ -17,7 +17,7 @@
 // ChakraCore version number definitions (used in ChakraCore binary metadata)
 #define CHAKRA_CORE_MAJOR_VERSION 1
 #define CHAKRA_CORE_MINOR_VERSION 11
-#define CHAKRA_CORE_PATCH_VERSION 18
+#define CHAKRA_CORE_PATCH_VERSION 19
 #define CHAKRA_CORE_VERSION_RELEASE_QFE 0 // Redundant with PATCH_VERSION. Keep this value set to 0.
 
 // -------------
diff --git a/lib/Runtime/ByteCode/ScopeInfo.cpp b/lib/Runtime/ByteCode/ScopeInfo.cpp
index eb64b4a411e..b0f924c9f0f 100644
--- a/lib/Runtime/ByteCode/ScopeInfo.cpp
+++ b/lib/Runtime/ByteCode/ScopeInfo.cpp
@@ -194,6 +194,23 @@ namespace Js
         ScopeInfo * scopeInfo = ScopeInfo::SaveScopeInfo(byteCodeGenerator, currentScope, byteCodeGenerator->GetScriptContext());
         if (scopeInfo != nullptr)
         {
+            if (funcInfo->root->IsDeclaredInParamScope())
+            {
+                FuncInfo* func = byteCodeGenerator->GetEnclosingFuncInfo();
+                Assert(func);
+
+                if (func->IsBodyAndParamScopeMerged())
+                {
+                    Assert(currentScope == func->GetParamScope() && currentScope->GetScopeType() == ScopeType_Parameter);
+                    Assert(scopeInfo->GetScopeType() == ScopeType_Parameter);
+                    Assert(func->GetBodyScope());
+
+                    // If the current function is nested in the param scope of it's enclosing function we may have
+                    // skipped the body scope and in may not be the scope stack but the body scope might still be
+                    // in the frame display and we will need to account for it. See ByteCodeGenerateor::FindScopeForSym.
+                    scopeInfo->mustInstantiate = func->GetBodyScope()->GetMustInstantiate();
+                }
+            }
             funcInfo->byteCodeFunction->SetScopeInfo(scopeInfo);
         }
     }