diff --git a/resources/releasedocs/changelog.html b/resources/releasedocs/changelog.html
index 06c247f84..eda807c81 100644
--- a/resources/releasedocs/changelog.html
+++ b/resources/releasedocs/changelog.html
@@ -141,6 +141,17 @@ hr {
 
 	<div id="pageBody">
 
+<h2>4.4.2 -- <span style="font-weight: normal;">2021-03-25</span></h2>
+
+<h2>        Bug
+</h2>
+<ul>
+<li>[<a href='https://igniterealtime.atlassian.net/browse/SMACK-903'>SMACK-903</a>] -         StaxXmlPullParser.getNamespace() may throws IllegalArgumentException
+</li>
+<li>[<a href='https://igniterealtime.atlassian.net/browse/SMACK-904'>SMACK-904</a>] -         XEP-0096 file transfer fails because of a hidden ClastCastException
+</li>
+</ul>
+
 <h2>4.4.1 -- <span style="font-weight: normal;">2021-03-03</span></h2>
 
 <h2>        Bug
diff --git a/smack-extensions/src/main/java/org/jivesoftware/smack/chat2/ChatManager.java b/smack-extensions/src/main/java/org/jivesoftware/smack/chat2/ChatManager.java
index e8349b6c6..3238dda04 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smack/chat2/ChatManager.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smack/chat2/ChatManager.java
@@ -161,7 +161,7 @@ public final class ChatManager extends Manager {
                 }
 
                 final EntityFullJid fullFrom = from.asEntityFullJidIfPossible();
-                if (!chat.lockedResource.equals(fullFrom)) {
+                if (chat.lockedResource.equals(fullFrom)) {
                     return;
                 }
 
diff --git a/smack-extensions/src/main/java/org/jivesoftware/smackx/muc/MultiUserChat.java b/smack-extensions/src/main/java/org/jivesoftware/smackx/muc/MultiUserChat.java
index af1957415..13aeb05ac 100644
--- a/smack-extensions/src/main/java/org/jivesoftware/smackx/muc/MultiUserChat.java
+++ b/smack-extensions/src/main/java/org/jivesoftware/smackx/muc/MultiUserChat.java
@@ -57,6 +57,7 @@ import org.jivesoftware.smack.filter.ToMatchesFilter;
 import org.jivesoftware.smack.packet.IQ;
 import org.jivesoftware.smack.packet.Message;
 import org.jivesoftware.smack.packet.MessageBuilder;
+import org.jivesoftware.smack.packet.MessageView;
 import org.jivesoftware.smack.packet.Presence;
 import org.jivesoftware.smack.packet.Stanza;
 import org.jivesoftware.smack.util.Objects;
@@ -2034,16 +2035,18 @@ public class MultiUserChat {
      * Sends a Message to the chat room.
      *
      * @param messageBuilder the message.
+     * @return a read-only view of the send message.
      * @throws NotConnectedException if the XMPP connection is not connected.
      * @throws InterruptedException if the calling thread was interrupted.
      */
-    public void sendMessage(MessageBuilder messageBuilder) throws NotConnectedException, InterruptedException {
+    public MessageView sendMessage(MessageBuilder messageBuilder) throws NotConnectedException, InterruptedException {
         for (MucMessageInterceptor interceptor : messageInterceptors) {
             interceptor.intercept(messageBuilder, this);
         }
 
         Message message = messageBuilder.to(room).ofType(Message.Type.groupchat).build();
         connection.sendStanza(message);
+        return message;
     }
 
     /**