Input syncing between clients, inventory sync bugfix, structure sync bugfix, settings button highlight bugfix, spectating bugfixes, in-game chatbox not visible when joining a server when the round is running

Subsurface/Source/Items/CharacterInventory.cs

@@ -381,7 +381,7 @@ namespace Barotrauma
                     Item item = Entity.FindEntityByID(itemId) as Item;
                     if (item == null) continue;
 
-                    if (items[i] != item) items[i].Drop(character, false);
+                    if (items[i] != item && items[i] != null) items[i].Drop(character, false);
                     TryPutItem(item, i, false);
                 }
             }

Subsurface/Source/Items/Inventory.cs

@@ -118,7 +118,7 @@ namespace Barotrauma
 
             if (item.inventory != null && removeItem)
             {
-                item.Drop();
+                item.Drop(null, false);
                 item.inventory.RemoveItem(item);
             }