--- a/net/minecraft/network/protocol/game/PacketPlayInChat.java
+++ b/net/minecraft/network/protocol/game/PacketPlayInChat.java
@@ -20,7 +20,7 @@
 
     @Override
     public void a(PacketDataSerializer packetdataserializer) throws IOException {
-        this.a = packetdataserializer.e(256);
+        this.a = org.apache.commons.lang3.StringUtils.normalizeSpace(packetdataserializer.e(256)); // CraftBukkit - see PlayerConnection
     }
 
     @Override