Modpack used is FTB Infinity Evolved with BuildCraft version 7.1.23 on minecraft 1.7.10

Advanced Crafting Tables and Stamping Tables seem to teleport the axes my lumberjack robots were using into the Stamping Table. It also begins creating lots of "ghost" items (disappears when picked up) and filling the stamper output with them. It then pours ghost items all over the ground. When this happens axes are removed from lumberjack bots, and the bots then go to pick up a new axe. It only steals axes when the lumberjack bots are working.

The recipe stamper and advanced crafting tables were crafting spruce wood planks from a spruce log. I have not tried other recipes.