diff --git a/smallrye-reactive-messaging-amqp/src/main/java/io/smallrye/reactive/messaging/amqp/AmqpConnector.java b/smallrye-reactive-messaging-amqp/src/main/java/io/smallrye/reactive/messaging/amqp/AmqpConnector.java
index 32546bbdeb..3ff27ef6fd 100644
--- a/smallrye-reactive-messaging-amqp/src/main/java/io/smallrye/reactive/messaging/amqp/AmqpConnector.java
+++ b/smallrye-reactive-messaging-amqp/src/main/java/io/smallrye/reactive/messaging/amqp/AmqpConnector.java
@@ -53,7 +53,6 @@
 import io.smallrye.reactive.messaging.providers.connectors.ExecutionHolder;
 import io.smallrye.reactive.messaging.providers.helpers.MultiUtils;
 import io.smallrye.reactive.messaging.providers.helpers.VertxContext;
-import io.smallrye.reactive.messaging.providers.impl.ConcurrencyConnectorConfig;
 import io.vertx.amqp.AmqpClientOptions;
 import io.vertx.amqp.AmqpReceiverOptions;
 import io.vertx.amqp.AmqpSenderOptions;
@@ -224,10 +223,7 @@ public Flow.Publisher<? extends Message<?>> getPublisher(Config config) {
 
         AmqpClient client = AmqpClientHelper.createClient(this, ic, clientOptions, clientSslContexts);
 
-        Context root = null;
-        if (ConcurrencyConnectorConfig.getConcurrency(config).filter(i -> i > 1).isPresent()) {
-            root = Context.newInstance(((VertxInternal) getVertx().getDelegate()).createEventLoopContext());
-        }
+        Context root = Context.newInstance(((VertxInternal) getVertx().getDelegate()).createEventLoopContext());
         ConnectionHolder holder = new ConnectionHolder(client, ic, getVertx(), root);
         holders.put(ic.getChannel(), holder);
 
diff --git a/smallrye-reactive-messaging-jms/src/test/java/io/smallrye/reactive/messaging/jms/JmsSinkTest.java b/smallrye-reactive-messaging-jms/src/test/java/io/smallrye/reactive/messaging/jms/JmsSinkTest.java
index ff16c02736..542f0fc970 100644
--- a/smallrye-reactive-messaging-jms/src/test/java/io/smallrye/reactive/messaging/jms/JmsSinkTest.java
+++ b/smallrye-reactive-messaging-jms/src/test/java/io/smallrye/reactive/messaging/jms/JmsSinkTest.java
@@ -276,14 +276,21 @@ public void testWithDisconnection() {
                 .extracting(m -> m.getBody(String.class))
                 .containsExactly("1"));
 
+        // close client
+        close();
+
         // send just before stopping
         bean.send("2");
         stopArtemis();
+
+        assertThat(received).hasSize(1);
+
         startArtemis();
 
         // send after restart
         bean.send("3");
 
+        // init the client
         init();
         consumer = jms.createConsumer(q);
         consumer.setMessageListener(received::add);
diff --git a/smallrye-reactive-messaging-mqtt/src/main/java/io/smallrye/reactive/messaging/mqtt/MqttSource.java b/smallrye-reactive-messaging-mqtt/src/main/java/io/smallrye/reactive/messaging/mqtt/MqttSource.java
index 30ce90c719..0f5eb4ee84 100644
--- a/smallrye-reactive-messaging-mqtt/src/main/java/io/smallrye/reactive/messaging/mqtt/MqttSource.java
+++ b/smallrye-reactive-messaging-mqtt/src/main/java/io/smallrye/reactive/messaging/mqtt/MqttSource.java
@@ -16,7 +16,6 @@
 import io.smallrye.reactive.messaging.mqtt.session.MqttClientSessionOptions;
 import io.smallrye.reactive.messaging.mqtt.session.RequestedQoS;
 import io.smallrye.reactive.messaging.providers.helpers.VertxContext;
-import io.smallrye.reactive.messaging.providers.impl.ConcurrencyConnectorConfig;
 import io.vertx.core.impl.VertxInternal;
 import io.vertx.mutiny.core.Context;
 import io.vertx.mutiny.core.Vertx;
@@ -54,9 +53,7 @@ public MqttSource(Vertx vertx, MqttConnectorIncomingConfiguration config,
         } else {
             pattern = null;
         }
-        final Context root = ConcurrencyConnectorConfig.getConcurrency(config.config).filter(i -> i > 1)
-                .map(__ -> Context.newInstance(((VertxInternal) vertx.getDelegate()).createEventLoopContext()))
-                .orElse(null);
+        final Context root = Context.newInstance(((VertxInternal) vertx.getDelegate()).createEventLoopContext());
         holder = Clients.getHolder(vertx, options);
         holder.start().onSuccess(ignore -> started.set(true));
         holder.getClient()
@@ -69,7 +66,7 @@ public MqttSource(Vertx vertx, MqttConnectorIncomingConfiguration config,
 
         this.source = holder.stream()
                 .select().where(m -> MqttTopicHelper.matches(topic, pattern, m))
-                .plug(m -> (root != null) ? m.emitOn(c -> VertxContext.runOnContext(root.getDelegate(), c)) : m)
+                .emitOn(c -> VertxContext.runOnContext(root.getDelegate(), c))
                 .onItem().transform(m -> new ReceivingMqttMessage(m, onNack))
                 .stage(multi -> {
                     if (broadcast)
diff --git a/smallrye-reactive-messaging-rabbitmq/src/main/java/io/smallrye/reactive/messaging/rabbitmq/internals/IncomingRabbitMQChannel.java b/smallrye-reactive-messaging-rabbitmq/src/main/java/io/smallrye/reactive/messaging/rabbitmq/internals/IncomingRabbitMQChannel.java
index 4fd2bd8966..2987a1ffd2 100644
--- a/smallrye-reactive-messaging-rabbitmq/src/main/java/io/smallrye/reactive/messaging/rabbitmq/internals/IncomingRabbitMQChannel.java
+++ b/smallrye-reactive-messaging-rabbitmq/src/main/java/io/smallrye/reactive/messaging/rabbitmq/internals/IncomingRabbitMQChannel.java
@@ -22,7 +22,6 @@
 import io.smallrye.reactive.messaging.health.HealthReport;
 import io.smallrye.reactive.messaging.providers.helpers.CDIUtils;
 import io.smallrye.reactive.messaging.providers.helpers.VertxContext;
-import io.smallrye.reactive.messaging.providers.impl.ConcurrencyConnectorConfig;
 import io.smallrye.reactive.messaging.rabbitmq.ClientHolder;
 import io.smallrye.reactive.messaging.rabbitmq.IncomingRabbitMQMessage;
 import io.smallrye.reactive.messaging.rabbitmq.RabbitMQConnector;
@@ -131,10 +130,7 @@ private Uni<Tuple2<ClientHolder, RabbitMQConsumer>> createConsumer(RabbitMQConne
                     .subscribe().with(ignored -> promise.complete(), promise::fail);
         });
 
-        Context root = null;
-        if (ConcurrencyConnectorConfig.getConcurrency(ic.config()).filter(i -> i > 1).isPresent()) {
-            root = Context.newInstance(((VertxInternal) connector.vertx().getDelegate()).createEventLoopContext());
-        }
+        Context root = Context.newInstance(((VertxInternal) connector.vertx().getDelegate()).createEventLoopContext());
         final ClientHolder holder = new ClientHolder(client, ic, connector.vertx(), root);
         return holder.getOrEstablishConnection()
                 .invoke(() -> log.connectionEstablished(ic.getChannel()))