Fix #166

modules/game_interface/gameinterface.lua

@@ -529,6 +529,7 @@ function processMouseAction(menuPosition, mouseButton, autoWalkPos, lookThing, u
         return true
       else
         g_game.use(useThing)
+        return true
       end
       return true
     elseif lookThing and keyboardModifiers == KeyboardShiftModifier and (mouseButton == MouseLeftButton or mouseButton == MouseRightButton) then

modules/game_interface/widgets/uigamemap.lua

@@ -51,7 +51,9 @@ function UIGameMap:onDrop(widget, mousePos)
 end
 
 function UIGameMap:onMousePress()
-  self.allowNextRelease = true
+  if not self:isDragging() then
+    self.allowNextRelease = true
+  end
 end
 
 function UIGameMap:onMouseRelease(mousePosition, mouseButton)