A client-side bug where the items (must be 2 items or more, single item drops I.E unicorn horns from unicorns does not have the bug) appear as double or triple when dropped.
http://prntscr.com/6o2w2g
http://prntscr.com/6o2w60

I noticed I'm not the only one by seeing this: http://emps-world.net/forum/index.php?topic=9122
Once one item from the original drop is picked up the bug is gone and drops appear as normal (might be because I just tested it on 2 item drops and only 1 was left).

I tested it with 3 item drops and they appear as triple: http://prntscr.com/6o32k6
I'm yet to test with 4 items, they might appear as quadruple drops.

I deleted and re-downloaded my client yesterday so I doubt it's outdated, nor do I think it is my java as it was also updated yesterday.

It's a known bug, thomy is working on fixing it.

I've just fixed the issue. A client restart will let items appear as one again.