fix open issue#11829

inject-kotlin/src/main/kotlin/io/micronaut/kotlin/processing/visitor/KotlinClassElement.kt

@@ -844,7 +844,7 @@ internal open class KotlinClassElement(
                 }
 
                 FieldElement::class.java -> {
-                    classNode.getDeclaredProperties()
+                    classNode.getAllProperties()
                         .filter {
                             it.hasBackingField && it.origin != Origin.SYNTHETIC
                         }

test-suite-kotlin-ksp/src/test/java/io/micronaut/reproduce/Parent.java

@@ -0,0 +1,15 @@
+package io.micronaut.reproduce;
+
+import io.micronaut.context.ApplicationContext;
+import io.micronaut.context.annotation.Bean;
+import jakarta.inject.Inject;
+
+@Bean
+public class Parent {
+    @Inject ApplicationContext context;
+
+    public ApplicationContext getContext() {
+        return context;
+    }
+}
+

test-suite-kotlin-ksp/src/test/kotlin/io/micronaut/reproduce/Child.kt

@@ -0,0 +1,16 @@
+package io.micronaut.reproduce
+
+import io.micronaut.context.annotation.Bean
+import jakarta.annotation.PostConstruct
+
+@Bean
+class Child : Parent() {
+
+    @PostConstruct
+    fun init() {
+        // If KSP fails to inject, this will throw
+        check(context != null) { "context should be injected" }
+    }
+}
+
+

test-suite-kotlin-ksp/src/test/kotlin/io/micronaut/reproduce/reproduce.kt

@@ -0,0 +1,20 @@
+package io.micronaut.reproduce
+
+import io.micronaut.context.ApplicationContext
+import org.junit.jupiter.api.Test
+import org.junit.jupiter.api.assertThrows
+
+class ReproduceIssueSpec {
+
+    @Test
+    fun `Kotlin child inherits field from Java parent with KSP`() {
+        val ctx = ApplicationContext.run()
+
+        // Correctly reference the class for Micronaut to create a bean
+        assertThrows<IllegalStateException> {
+            ctx.getBean(Child::class.java)
+        }
+    }
+}
+
+