Bind to current-value instead of value.

packages/blazor-workspace/NimbleBlazor/Components/NimbleNumberField.razor

@@ -2,7 +2,7 @@
 @inherits NimbleInputBase<double?>
 <nimble-number-field
     appearance="@Appearance.ToAttributeValue()"
-    value="@Value"
+    current-value="@CurrentValue"
     @onchange="@(EventCallback.Factory.CreateBinder<string?>(this, __value => CurrentValueAsString = __value, CurrentValueAsString))"
     readonly="@ReadOnly"
     disabled="@Disabled"

packages/blazor-workspace/Tests/NimbleBlazor.Tests.Acceptance/Pages.InteractiveServer/NumberFieldBindings.razor

@@ -0,0 +1,31 @@
+@page "/InteractiveServer/NumberFieldBindings"
+@namespace NimbleBlazor.Tests.Acceptance.Pages
+@using System.Diagnostics.CodeAnalysis;
+@inherits LayoutComponentBase
+@rendermode @(new InteractiveServerRenderMode(prerender: false))
+
+<NimbleNumberField id="number1" Value="_value1" ValueChanged="Value1Changed"></NimbleNumberField>
+<NimbleNumberField id="number2" Value="_value2" ValueChanged="Value2Changed"></NimbleNumberField>
+
+@code {
+    private double _value1;
+    private double _value2;
+
+    private void Value1Changed(double? value)
+    {
+        double newValue = value / 2 ?? 0;
+        if (_value2 != newValue)
+        {
+            _value2 = newValue;
+        }
+    }
+
+    private void Value2Changed(double? value)
+    {
+        double newValue = value * 2 ?? 0;
+        if (_value1 != newValue)
+        {
+            _value1 = newValue;
+        }
+    }
+}

packages/blazor-workspace/Tests/NimbleBlazor.Tests.Acceptance/Tests.InteractiveServer/NumberFieldBindingTests.cs

@@ -0,0 +1,31 @@
+using BlazorWorkspace.Testing.Acceptance;
+using Microsoft.Playwright;
+using Xunit;
+
+namespace NimbleBlazor.Tests.Acceptance.InteractiveServer;
+
+public class NumberFieldBindingTests : NimbleInteractiveAcceptanceTestsBase
+{
+    public NumberFieldBindingTests(PlaywrightFixture playwrightFixture, NimbleBlazorWebHostServerFixture blazorServerClassFixture)
+        : base(playwrightFixture, blazorServerClassFixture)
+    {
+    }
+
+    [Fact]
+    public async Task NumberField_TwoWayBindingsDontBreakAsync()
+    {
+        await using (var pageWrapper = await NewPageForRouteAsync("InteractiveServer/NumberFieldBindings"))
+        {
+            var page = pageWrapper.Page;
+            var numberField1 = page.Locator("#number1");
+            var numberField1IncButton = numberField1.Locator("nimble-button", new LocatorLocatorOptions() { HasText = "Increment" });
+            var numberField2 = page.Locator("#number2");
+            var numberField2IncButton = numberField2.Locator("nimble-button", new LocatorLocatorOptions() { HasText = "Increment" });
+
+            await numberField1IncButton.ClickAsync();
+            await Assertions.Expect(numberField2).ToHaveAttributeAsync("current-value", "0.5");
+            await numberField2IncButton.ClickAsync();
+            await Assertions.Expect(numberField1).ToHaveAttributeAsync("current-value", "3"); // incrementing numberField2 to 1.5 should result in 3 for numberField1
+        }
+    }
+}