diff --git a/src/Tomlyn.Tests/BasicTests.cs b/src/Tomlyn.Tests/BasicTests.cs
index 06f86db..00553ed 100644
--- a/src/Tomlyn.Tests/BasicTests.cs
+++ b/src/Tomlyn.Tests/BasicTests.cs
@@ -12,6 +12,19 @@ namespace Tomlyn.Tests
 {
     public class BasicTests
     {
+        [Test]
+        public void TestTableArraysContainingPrimitiveArraysSerialize()
+        {
+            var test = @"[[table_array]]
+primitive_list = [4, 5, 6]
+";
+
+            var model = Toml.ToModel(test);
+            var tomlOut = Toml.FromModel(model);
+
+            Assert.AreEqual(test, tomlOut);
+        }
+
         [Test]
         public void TestHelloWorld()
         {
diff --git a/src/Tomlyn/Model/ModelToTomlTransform.cs b/src/Tomlyn/Model/ModelToTomlTransform.cs
index a139dda..1f0df06 100644
--- a/src/Tomlyn/Model/ModelToTomlTransform.cs
+++ b/src/Tomlyn/Model/ModelToTomlTransform.cs
@@ -432,6 +432,10 @@ private bool IsRequiringInline(object? value)
 
     private bool IsRequiringInline(ListDynamicAccessor accessor, object value, int parentConsecutiveList)
     {
+        // Always disable inline for TomlTableArray
+        // This is only working for default TomlTableArray model
+        if (value is TomlTableArray) return false;
+
         foreach (var element in accessor.GetElements(value))
         {
             if (element is null) continue; // TODO: should this log an error?