Describe the bug
Having Magnetism II while an item drops from either an npc or a block broken allows you to pick up a dozen more of the same item you were about to pick up

To Reproduce
Steps to reproduce the behavior:
Method 1 -

1. Have a pet rat w/ the chef rat upgrade
2. Drink a Magnetism II potion
3. Give it Dragon Flesh in order to have it make Meat Feast pizza
4. Wait for it to finish and see results

Method 2 -

1. Place a chest down (I used a cabinet to do this)
2. Drink Magnetism II potion
3. Place any item inside the chest (or cabinet)
4. Break it and anything you put in the chest (along w/ the chest/cabinet) gets duplicated
   Note: An axe or any tool w/ magnetic enchant bypasses the item dupe and only duplicates the chest

Expected behavior
I was expecting to give me just one of an item instantly without delay as the potion describes

Screenshots
https://cdn.discordapp.com/attachments/408367824508289026/915478680443158548/Pizzer.mp4 (video of me having Magnetism II before and after for comparison while Meat Feast Pizzas are being made for me to pick up)
https://cdn.discordapp.com/attachments/408367824508289026/915491262088499231/Funnydupe.mp4 (This one is pretty self-explanatory, Magnetism was already applied during the duration of this video)

Info (please complete the following information):

• Modpack Version:
  • 2.77.5
  • 3.0 BETA 5
  • Other:
• Server or Singleplayer:
  • Server
  • Singleplayer
• Version the world was created on:
  • 2.77.5
  • 3.0 BETA 5
  • Other:

Additional context
I had a feeling it would be something tick related because that's what the potion description mentioned, I checked my in gamerule tickspeed and it was defaulted at a normal 3.

Fixed already, duplicate of #757