Steps to reproduce

1. Create any robot with inventory. (e.g. Creatix)
2. Place any Forestry backpack inside the robot.
3. Equip robot with tool if needed.
4. Make robot break block that backpack consumes.
5. Block/item will not go into backpack or robot inventory - it will dissappear.

Expected behavior

Block/Item will go into Forestry backpack.

Mod list

FTB Revelation 3.6.0b
OpenComputers 1.12.2-1.7.5.192
ExtraCells 1.12.2-2.6.5