diff --git a/packages/cinterop/src/jvm/kotlin/io/realm/kotlin/internal/interop/RealmInterop.kt b/packages/cinterop/src/jvm/kotlin/io/realm/kotlin/internal/interop/RealmInterop.kt
index 0bcf8c3cd4..33f29cf9e5 100644
--- a/packages/cinterop/src/jvm/kotlin/io/realm/kotlin/internal/interop/RealmInterop.kt
+++ b/packages/cinterop/src/jvm/kotlin/io/realm/kotlin/internal/interop/RealmInterop.kt
@@ -1310,7 +1310,8 @@ actual object RealmInterop {
     }
 
     actual fun realm_app_config_get_sync_client_config(configPointer: RealmAppConfigurationPointer): RealmSyncClientConfigurationPointer {
-        return LongPointerWrapper(realmc.realm_app_config_get_sync_client_config(configPointer.cptr()))
+        // The configuration is owned by Core so don't track and release it through garbage collection of the NativePointer
+        return LongPointerWrapper(realmc.realm_app_config_get_sync_client_config(configPointer.cptr()), false)
     }
 
     actual fun realm_sync_client_config_set_default_binding_thread_observer(syncClientConfig: RealmSyncClientConfigurationPointer, appId: String) {
diff --git a/packages/cinterop/src/nativeDarwin/kotlin/io/realm/kotlin/internal/interop/RealmInterop.kt b/packages/cinterop/src/nativeDarwin/kotlin/io/realm/kotlin/internal/interop/RealmInterop.kt
index f7179fd4a2..54fc9f530e 100644
--- a/packages/cinterop/src/nativeDarwin/kotlin/io/realm/kotlin/internal/interop/RealmInterop.kt
+++ b/packages/cinterop/src/nativeDarwin/kotlin/io/realm/kotlin/internal/interop/RealmInterop.kt
@@ -2465,7 +2465,8 @@ actual object RealmInterop {
     }
 
     actual fun realm_app_config_get_sync_client_config(configPointer: RealmAppConfigurationPointer): RealmSyncClientConfigurationPointer {
-        return CPointerWrapper(realm_wrapper.realm_app_config_get_sync_client_config(configPointer.cptr()))
+        // The configuration is owned by Core so don't track and release it through garbage collection of the NativePointer
+        return CPointerWrapper(realm_wrapper.realm_app_config_get_sync_client_config(configPointer.cptr()), false)
     }
 
     actual fun realm_sync_client_config_set_default_binding_thread_observer(
diff --git a/packages/external/core b/packages/external/core
index c280bdb175..bc7ff1b0ba 160000
--- a/packages/external/core
+++ b/packages/external/core
@@ -1 +1 @@
-Subproject commit c280bdb17522323d5c30dc32a2b9efc9dc80ca3b
+Subproject commit bc7ff1b0ba48b187757fdfa26bec65bcb6753b98
diff --git a/packages/test-sync/src/jvmTest/kotlin/io/realm/kotlin/test/mongodb/jvm/PlatformNetworkingTests.kt b/packages/test-sync/src/jvmTest/kotlin/io/realm/kotlin/test/mongodb/jvm/PlatformNetworkingTests.kt
new file mode 100644
index 0000000000..635e4ee501
--- /dev/null
+++ b/packages/test-sync/src/jvmTest/kotlin/io/realm/kotlin/test/mongodb/jvm/PlatformNetworkingTests.kt
@@ -0,0 +1,76 @@
+package io.realm.kotlin.test.mongodb.jvm
+
+import io.realm.kotlin.Realm
+import io.realm.kotlin.entities.sync.SyncObjectWithAllTypes
+import io.realm.kotlin.ext.query
+import io.realm.kotlin.internal.platform.runBlocking
+import io.realm.kotlin.log.LogCategory
+import io.realm.kotlin.log.LogLevel
+import io.realm.kotlin.log.RealmLog
+import io.realm.kotlin.mongodb.User
+import io.realm.kotlin.mongodb.sync.SyncConfiguration
+import io.realm.kotlin.mongodb.syncSession
+import io.realm.kotlin.test.mongodb.TestApp
+import io.realm.kotlin.test.mongodb.common.FLEXIBLE_SYNC_SCHEMA
+import io.realm.kotlin.test.mongodb.common.utils.CustomLogCollector
+import io.realm.kotlin.test.mongodb.createUserAndLogIn
+import io.realm.kotlin.test.mongodb.use
+import io.realm.kotlin.test.mongodb.util.DefaultFlexibleSyncAppInitializer
+import io.realm.kotlin.test.util.use
+import kotlin.test.Test
+import kotlin.test.assertEquals
+import kotlin.test.assertTrue
+import kotlin.time.Duration.Companion.seconds
+
+class PlatformNetworkingTests {
+
+    private val TIMEOUT = 10.seconds
+
+    @Test
+    fun syncRoundTrip() = runBlocking {
+        setOf(true, false).forEach { platformNetworking ->
+            TestApp(this::class.simpleName, DefaultFlexibleSyncAppInitializer, builder = {
+                it.usePlatformNetworking(platformNetworking)
+            }).use { app ->
+                val selector = org.mongodb.kbson.ObjectId().toString()
+
+                // Setup logger to capture WebSocketClient log messages
+                val logger = CustomLogCollector()
+                RealmLog.add(logger)
+                RealmLog.setLevel(LogLevel.DEBUG, LogCategory.Realm.Sdk)
+
+                Realm.open(createSyncConfig(app.createUserAndLogIn(), selector)).use { uploadRealm ->
+                    Realm.open(createSyncConfig(app.createUserAndLogIn(), selector)).use { realm ->
+                        uploadRealm.write {
+                            copyToRealm(
+                                SyncObjectWithAllTypes().apply {
+                                    stringField = selector
+                                }
+                            )
+                        }
+                        uploadRealm.syncSession.uploadAllLocalChanges(TIMEOUT)
+                        realm.syncSession.downloadAllServerChanges(TIMEOUT)
+                        assertEquals(1, realm.query<SyncObjectWithAllTypes>().find().size)
+                    }
+                }
+                assertTrue(
+                    if (platformNetworking) {
+                        logger.logs.any { it.contains("\\[Websocket.*\\] onOpen".toRegex()) }
+                    } else {
+                        logger.logs.none { it.contains("\\[Websocket.*\\] onOpen".toRegex()) }
+                    },
+                    "Failed to verify log statements for : platformNetworking=$platformNetworking"
+                )
+            }
+        }
+    }
+
+    private fun createSyncConfig(
+        user: User,
+        selector: String
+    ): SyncConfiguration {
+        return SyncConfiguration.Builder(user, FLEXIBLE_SYNC_SCHEMA).initialSubscriptions {
+            add(it.query<SyncObjectWithAllTypes>("stringField = $0", selector))
+        }.build()
+    }
+}