Player inventory item disaapear

[carapace7940]

Title: Player inventory item disaapear

Version: 3.1.2

OS: Windows 7

Java Version: 7 64-bit

Description of Problem:

I craft 4 or 5 signs and place them in my player inventory. Of course, each one takes up a slot. Then i close the inventory screen, walk to another location and re-open the inventory. 2 or 3 of the signs disappear. Occasionally I can see them for a split second before they disappear. While this happens an ink-sac (that i normally carry with me since I use it to edit-signs) moves to a different slot.

This also has occurred with buckets (also one-slot for each bucket). And so far only when an Ink-Sac has been present and moves.

Error Messages:

Error Log:

[Magister]

the moving objects is most likely due to inventory tweaks, i believe the key to auto arrange the inventory is R and i know that some items when it attempts to auto arrange it acts weird, also sometimes the inventorys on the player and chests arrange from it as well from what i have noticed. as for the items disapears that can be due to lag, same can happen when place an item in a chest or taking it out and then it never actually moves