First of all, sometimes my items and weapons get bugged when I drag these on my item bar and when I broke a weapon or tool, I can see it under the inventory slots but I can do anything with these.
Also I've seen that the perfomance of my computer is beeing slower as long as I play Ylands, I checked it out and I saw that the game is using a huge amount of RAM memory and but I think that its a bit too much for my computer.