diff --git a/.github/workflows/main-release-build.yml b/.github/workflows/main-release-build.yml
index a2defb41..60b16854 100644
--- a/.github/workflows/main-release-build.yml
+++ b/.github/workflows/main-release-build.yml
@@ -31,7 +31,7 @@ jobs:
         ./assetCopy.ps1
         cd ../..
     - name: Build Core
-      run: dotnet build ./src/dymaptic.GeoBlazor.Core/dymaptic.GeoBlazor.Core.csproj --no-restore /p:OptOutFromCoreEsBuild=false /p:GenerateDocs=false /p:UpdateTemplates=false -c Release
+      run: dotnet build ./src/dymaptic.GeoBlazor.Core/dymaptic.GeoBlazor.Core.csproj --no-restore /p:OptOutFromCoreEsBuild=true /p:GenerateDocs=false /p:UpdateTemplates=false -c Release
     - name: Install xmllint
       shell: bash
       run: |
diff --git a/Directory.Build.props b/Directory.Build.props
index 7043e61d..f75a251f 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -2,6 +2,6 @@
     <PropertyGroup>
         <Nullable>enable</Nullable>
         <ImplicitUsings>enable</ImplicitUsings>
-        <CoreVersion>3.1.0</CoreVersion>
+        <CoreVersion>3.1.1</CoreVersion>
     </PropertyGroup>
 </Project>
\ No newline at end of file
diff --git a/src/dymaptic.GeoBlazor.Core/Scripts/arcGisJsInterop.ts b/src/dymaptic.GeoBlazor.Core/Scripts/arcGisJsInterop.ts
index 4b319db8..c2a65da4 100644
--- a/src/dymaptic.GeoBlazor.Core/Scripts/arcGisJsInterop.ts
+++ b/src/dymaptic.GeoBlazor.Core/Scripts/arcGisJsInterop.ts
@@ -2034,7 +2034,7 @@ async function createWidget(widget: any, viewId: string): Promise<Widget | null>
             });
             newWidget = layerListWidget;
 
-            if (hasValue(widget.hasCustomHandler)) {
+            if (hasValue(widget.hasCustomHandler) && widget.hasCustomHandler) {
                 layerListWidget.listItemCreatedFunction = async (evt) => {
                     let dotNetListItem = buildDotNetListItem(evt.item);
                     let returnItem = await widget.layerListWidgetObjectReference.invokeMethodAsync('OnListItemCreated', dotNetListItem) as DotNetListItem;
@@ -2051,7 +2051,7 @@ async function createWidget(widget: any, viewId: string): Promise<Widget | null>
             });
             newWidget = basemapLayerListWidget;
 
-            if (hasValue(widget.hasCustomBaseListHandler)) {
+            if (hasValue(widget.hasCustomBaseListHandler) && widget.hasCustomBaseListHandler) {
                 basemapLayerListWidget.baseListItemCreatedFunction = async (evt) => {
                     let dotNetBaseListItem = buildDotNetListItem(evt.item);
                     let returnItem = await widget.baseLayerListWidgetObjectReference.invokeMethodAsync('OnBaseListItemCreated', dotNetBaseListItem) as DotNetListItem;
@@ -2060,7 +2060,7 @@ async function createWidget(widget: any, viewId: string): Promise<Widget | null>
                     }
                 };
             }
-            if (hasValue(widget.hasCustomReferenceListHandler)) {
+            if (hasValue(widget.hasCustomReferenceListHandler) && widget.hasCustomReferenceListHandler) {
                 basemapLayerListWidget.baseListItemCreatedFunction = async (evt) => {
                     let dotNetReferenceListItem = buildDotNetListItem(evt.item);
                     let returnItem = await widget.baseLayerListWidgetObjectReference.invokeMethodAsync('OnReferenceListItemCreated', dotNetReferenceListItem) as DotNetListItem;
diff --git a/templates/content/dymaptic.GeoBlazor.Template.Maui/dymaptic.GeoBlazor.Template.Maui.csproj b/templates/content/dymaptic.GeoBlazor.Template.Maui/dymaptic.GeoBlazor.Template.Maui.csproj
index 6a6a12a8..b7964502 100644
--- a/templates/content/dymaptic.GeoBlazor.Template.Maui/dymaptic.GeoBlazor.Template.Maui.csproj
+++ b/templates/content/dymaptic.GeoBlazor.Template.Maui/dymaptic.GeoBlazor.Template.Maui.csproj
@@ -81,7 +81,7 @@
 	</ItemGroup>
 
 	<ItemGroup>
-		<PackageReference Include="dymaptic.GeoBlazor.Core" Version="3.1.0" />
+		<PackageReference Include="dymaptic.GeoBlazor.Core" Version="3.1.1" />
 		<PackageReference Include="Microsoft.Extensions.Configuration" Version="8.0.0" />
 		<PackageReference Include="Microsoft.Extensions.Configuration.UserSecrets" Version="8.0.0" />
 		<PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="8.0.0" />
diff --git a/templates/content/dymaptic.GeoBlazor.Template.Server/dymaptic.GeoBlazor.Template.Server.csproj b/templates/content/dymaptic.GeoBlazor.Template.Server/dymaptic.GeoBlazor.Template.Server.csproj
index 1889a8b8..858016f3 100644
--- a/templates/content/dymaptic.GeoBlazor.Template.Server/dymaptic.GeoBlazor.Template.Server.csproj
+++ b/templates/content/dymaptic.GeoBlazor.Template.Server/dymaptic.GeoBlazor.Template.Server.csproj
@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="dymaptic.GeoBlazor.Core" Version="3.1.0" />
+    <PackageReference Include="dymaptic.GeoBlazor.Core" Version="3.1.1" />
   </ItemGroup>
 
 </Project>
diff --git a/templates/content/dymaptic.GeoBlazor.Template.WebApp/dymaptic.GeoBlazor.Template.WebApp.Client/dymaptic.GeoBlazor.Template.WebApp.Client.csproj b/templates/content/dymaptic.GeoBlazor.Template.WebApp/dymaptic.GeoBlazor.Template.WebApp.Client/dymaptic.GeoBlazor.Template.WebApp.Client.csproj
index ccef3e85..69b6a591 100644
--- a/templates/content/dymaptic.GeoBlazor.Template.WebApp/dymaptic.GeoBlazor.Template.WebApp.Client/dymaptic.GeoBlazor.Template.WebApp.Client.csproj
+++ b/templates/content/dymaptic.GeoBlazor.Template.WebApp/dymaptic.GeoBlazor.Template.WebApp.Client/dymaptic.GeoBlazor.Template.WebApp.Client.csproj
@@ -9,7 +9,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="dymaptic.GeoBlazor.Core" Version="3.1.0" />
+    <PackageReference Include="dymaptic.GeoBlazor.Core" Version="3.1.1" />
     <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly" Version="8.0.7" />
     <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.DevServer" Version="8.0.7" PrivateAssets="all" />
   </ItemGroup>
diff --git a/templates/content/dymaptic.GeoBlazor.Template.WebApp/dymaptic.GeoBlazor.Template.WebApp/dymaptic.GeoBlazor.Template.WebApp.csproj b/templates/content/dymaptic.GeoBlazor.Template.WebApp/dymaptic.GeoBlazor.Template.WebApp/dymaptic.GeoBlazor.Template.WebApp.csproj
index b3054d70..452488f3 100644
--- a/templates/content/dymaptic.GeoBlazor.Template.WebApp/dymaptic.GeoBlazor.Template.WebApp/dymaptic.GeoBlazor.Template.WebApp.csproj
+++ b/templates/content/dymaptic.GeoBlazor.Template.WebApp/dymaptic.GeoBlazor.Template.WebApp/dymaptic.GeoBlazor.Template.WebApp.csproj
@@ -8,7 +8,7 @@
 
 	<ItemGroup>
 		<ProjectReference Include="..\dymaptic.GeoBlazor.Template.WebApp.Client\dymaptic.GeoBlazor.Template.WebApp.Client.csproj" />
-		<PackageReference Include="dymaptic.GeoBlazor.Core" Version="3.1.0" />
+		<PackageReference Include="dymaptic.GeoBlazor.Core" Version="3.1.1" />
 		<PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.Server" Version="8.0.7" />
 	</ItemGroup>
 
diff --git a/templates/content/dymaptic.GeoBlazor.Template.WebAssembly/dymaptic.GeoBlazor.Template.WebAssembly.csproj b/templates/content/dymaptic.GeoBlazor.Template.WebAssembly/dymaptic.GeoBlazor.Template.WebAssembly.csproj
index d70e1515..12a64d4f 100644
--- a/templates/content/dymaptic.GeoBlazor.Template.WebAssembly/dymaptic.GeoBlazor.Template.WebAssembly.csproj
+++ b/templates/content/dymaptic.GeoBlazor.Template.WebAssembly/dymaptic.GeoBlazor.Template.WebAssembly.csproj
@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="dymaptic.GeoBlazor.Core" Version="3.1.0" />
+    <PackageReference Include="dymaptic.GeoBlazor.Core" Version="3.1.1" />
     <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly" Version="8.0.7" />
     <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.DevServer" Version="8.0.7" PrivateAssets="all" />
   </ItemGroup>
diff --git a/templates/dymaptic.GeoBlazor.Templates.csproj b/templates/dymaptic.GeoBlazor.Templates.csproj
index cc511e70..9f5701af 100644
--- a/templates/dymaptic.GeoBlazor.Templates.csproj
+++ b/templates/dymaptic.GeoBlazor.Templates.csproj
@@ -3,7 +3,7 @@
 	<PropertyGroup>
 		<PackageId>dymaptic.GeoBlazor.Templates</PackageId>
 		<Title>GeoBlazor Project Templates</Title>
-		<PackageVersion>3.1.0</PackageVersion>
+		<PackageVersion>3.1.1</PackageVersion>
 		<Version>2.5.2</Version>
 		<PackageLicenseExpression>MIT</PackageLicenseExpression>
 		<Company>dymaptic</Company>
diff --git a/test/dymaptic.GeoBlazor.Core.Test.Blazor.Shared/Components/WidgetTests.razor b/test/dymaptic.GeoBlazor.Core.Test.Blazor.Shared/Components/WidgetTests.razor
index 9c4bf446..e2fc946a 100644
--- a/test/dymaptic.GeoBlazor.Core.Test.Blazor.Shared/Components/WidgetTests.razor
+++ b/test/dymaptic.GeoBlazor.Core.Test.Blazor.Shared/Components/WidgetTests.razor
@@ -55,6 +55,30 @@
         Assert.IsTrue(handlerWasCalled);
     }
 
+    [TestMethod]
+    public async Task TestCanRenderBasemapLayerListWidgetWithoutHandler(Action renderHandler)
+    {
+        AddMapRenderFragment(
+            @<MapView class="map-view" OnViewRendered="renderHandler">
+
+                <Map>
+                    <Basemap>
+                        <TileLayer>
+                            <PortalItem Id="1b243539f4514b6ba35e7d995890db1d" />
+                        </TileLayer>
+                        <VectorTileLayer Opacity="0.75">
+                            <PortalItem Id="6976148c11bd497d8624206f9ee03e30" />
+                        </VectorTileLayer>
+                    </Basemap>
+                </Map>
+                <BasemapLayerListWidget />
+
+            </MapView>);
+
+        await WaitForMapToRender();
+        await AssertJavaScript("assertWidgetExists", args: "esri.widgets.BasemapLayerList");
+    }
+
     [TestMethod]
     public async Task TestBasemapToggleFailsWithoutNextBasemap(Action renderHandler)
     {