Upon dropping items, they were displayed as if they were stone.
Created a f3-c crash file in an attempt to pin down the bug.
Running two instances of minecraft with different account, connecting to a local server (127.0.0.1), see screenshot.
Steps to Reproduce:
Haven't been able to again, yet.
I believe this is a duplicate of MC-93454
Environment
OS: Windows 7 (ver 6.1, arch amd64)
Java: 1.8.0_25 (by Oracle Corporation)
Launcher: Minecraft Launcher 1.6.59 (bootstrap 100)
Minecraft: 1.9-pre3 (updated Wed Feb 24 07:53:30 PST 2016)
duplicate of MC-93454