minecraft 1.7.10, forge 10.13.4.1558, baulbes 1.7.10-1.0.1.10, botania r1.8-245, realbench 1.2.0

Exiting Assembly Halo or Manufactory Halo crafting interface with items still in it will not drop anything on ground but delete them instead. Happens with RealBench (curseforge) mod that modifies vanilla crafting table to keep its content after player exits crafting interface.

If someone wants to play around in vanilla classes, of course botania will have problems trying to use them. This is an issue in that mod, not botania.