The contextual menu (right click) is fine, but there are 2 problems so far:

- when there is some lag the menu appears a little bit after the click. this is okay, but if the mouse is moved meanwhile, the menu is positioned at the mouse pointer, not at the original click - this may be confusing, especially if two similar items are in inventory and it is not obvious which one the menu refers to;
- when the context menu is placed near a border it is not repositioned inside the boundaries, but it crosses the boundaries - this means that it may be nearly completely outside the screen (simply put inventory to right side and item in right-most slot).