Fixed step into

src/Avalonia.Build.Tasks/XamlCompilerTaskExecutor.cs

@@ -74,9 +74,9 @@ namespace Avalonia.Build.Tasks
                     .First(c => c.Parameters.Count == 1));
 
             var runtimeHelpers = typeSystem.GetType("Avalonia.Markup.Xaml.XamlIl.Runtime.XamlIlRuntimeHelpers");
-            var getRootServiceProvider = asm.MainModule.ImportReference(
+            var rootServiceProviderField = asm.MainModule.ImportReference(
-                typeSystem.GetTypeReference(runtimeHelpers).Resolve().Methods
+                typeSystem.GetTypeReference(runtimeHelpers).Resolve().Fields
-                    .First(x => x.Name == "GetRootServiceProviderV1"));
+                    .First(x => x.Name == "RootServiceProviderV1"));
             
             var loaderDispatcherDef = new TypeDefinition("CompiledAvaloniaXaml", "!XamlLoader",
                 TypeAttributes.Class, asm.MainModule.TypeSystem.Object);
@@ -162,7 +162,7 @@ namespace Avalonia.Build.Tasks
                                 MethodAttributes.Static | MethodAttributes.Private, asm.MainModule.TypeSystem.Void);
                             trampoline.Parameters.Add(new ParameterDefinition(classTypeDefinition));
                             classTypeDefinition.Methods.Add(trampoline);
-                            trampoline.Body.Instructions.Add(Instruction.Create(OpCodes.Call, getRootServiceProvider));
+                            trampoline.Body.Instructions.Add(Instruction.Create(OpCodes.Ldsfld, rootServiceProviderField));
                             trampoline.Body.Instructions.Add(Instruction.Create(OpCodes.Ldarg_0));
                             trampoline.Body.Instructions.Add(Instruction.Create(OpCodes.Call, compiledPopulateMethod));
                             trampoline.Body.Instructions.Add(Instruction.Create(OpCodes.Ret));
@@ -247,7 +247,7 @@ namespace Avalonia.Build.Tasks
                                     i.Add(Instruction.Create(OpCodes.Newobj, parameterlessConstructor));
                                 else
                                 {
-                                    i.Add(Instruction.Create(OpCodes.Call, getRootServiceProvider));
+                                    i.Add(Instruction.Create(OpCodes.Ldsfld, rootServiceProviderField));
                                     i.Add(Instruction.Create(OpCodes.Call, compiledBuildMethod));
                                 }
 

src/Markup/Avalonia.Markup.Xaml/XamlIl/AvaloniaXamlIlRuntimeCompiler.cs

@@ -142,7 +142,7 @@ namespace Avalonia.Markup.Xaml.XamlIl
                 var createCb = Expression.Lambda<Func<IServiceProvider, object>>(
                     Expression.Convert(Expression.Call(
                         created.GetMethod(AvaloniaXamlIlCompiler.BuildName), isp), typeof(object)), isp).Compile();
-                return createCb(XamlIlRuntimeHelpers.GetRootServiceProviderV1());
+                return createCb(XamlIlRuntimeHelpers.RootServiceProviderV1);
             }
             else
             {
@@ -152,7 +152,7 @@ namespace Avalonia.Markup.Xaml.XamlIl
                 var populateCb = Expression.Lambda<Action<IServiceProvider, object>>(
                     Expression.Call(populate, isp, Expression.Convert(epar, populate.GetParameters()[1].ParameterType)),
                     isp, epar).Compile();
-                populateCb(XamlIlRuntimeHelpers.GetRootServiceProviderV1(), rootInstance);
+                populateCb(XamlIlRuntimeHelpers.RootServiceProviderV1, rootInstance);
                 return rootInstance;
             }
         }

src/Markup/Avalonia.Markup.Xaml/XamlIl/Runtime/XamlIlRuntimeHelpers.cs

@@ -125,10 +125,7 @@ namespace Avalonia.Markup.Xaml.XamlIl.Runtime
             }
         }
         
-        public static IServiceProvider GetRootServiceProviderV1()
+        public static readonly IServiceProvider RootServiceProviderV1 = new RootServiceProvider();
-        {
-            return new RootServiceProvider();
-        }
 
         class RootServiceProvider : IServiceProvider, IAvaloniaXamlIlParentStackProvider
         {