Put the summary of the bug you're having here

What I expected to happen was...:
When I place together a crossbow with an arrow charge together with another crossbow with or without another arrow charge into it inside a crafting table or my tiny craft inventory, I expected it to increase the durability life of my damaged crossbow and give me the arrows in my inventory...

I would at least expect to be given a fixed crossbow plus my arrow back... xD

What actually happened was...:
Once combined 2 items, the arrow inside the crossbow just Disappears, no matter what type of arrow was it, it just vanishes when you try to combine the crossbows together.

Steps to Reproduce:
1. Simply take a crossbow that is damaged or not on your crafting table.
2. combine the crossbows while they have a charged arrow ready to fire.
3. when you finish the combining progress, the arrow that was charged inside the crossbow has now disappeared.