Entering text into lobby chat box does not release focus.

Content.Client/Chat/ChatBox.cs

@@ -38,6 +38,8 @@ namespace Content.Client.Chat
         /// </summary>
         public string DefaultChatFormat { get; set; }
 
+        public bool ReleaseFocusOnEnter { get; set; } = true;
+
         protected override void Initialize()
         {
             base.Initialize();
@@ -151,7 +153,11 @@ namespace Content.Client.Chat
             _inputIndex = -1;
 
             Input.Clear();
-            Input.ReleaseKeyboardFocus();
+
+            if (ReleaseFocusOnEnter)
+            {
+                Input.ReleaseKeyboardFocus();
+            }
         }
     }
 }

Content.Client/UserInterface/LobbyGui.cs

@@ -28,7 +28,7 @@ namespace Content.Client.UserInterface
             base.Initialize();
 
             var chatContainer = GetChild("Panel/VBoxContainer/HBoxContainer/LeftVBox");
-            Chat = new ChatBox();
+            Chat = new ChatBox {ReleaseFocusOnEnter = false};
             chatContainer.AddChild(Chat);
             Chat.SizeFlagsVertical = SizeFlags.FillExpand;
         }