Bark and Proven Gears Shift-Click Item change

[MrPeach774]

When shift-clicking gears in your inventory, if there is bark the bark will become gears and then stack with your crafted gears. The reverse also occurs with shift-clicking bark into your inventory when you have gears. This probably has to do with the items sharing ids.

[Alex Binnie]

Fixed in 1.7.0b