Patch 0.2a_f1
This patch brings a new option for better physics which should solve the issue of items clipping through terrain and other objects. High Precision Physics setting can be accessed in the Game tab of the pause menu. It's enabled by default but if you are willing to sacrifice physics quality in favor of performance you can disable it.
Fixed a bug causing infinite drone drops in scavenger mode
Patch 0.2a_f2
Fixed a bug causing ammo loss when reloading with Remington and Mosin