I'm pretty sure this happens when you are moving too fast when you complete the craft
It's also inconsistent because sometimes the crafted item is not a ghost
*steps to reproduce:
you need to start a craft while falling and there is a large chance that the product will be a non-functional ghost item that will disappear if you die or leave the world.
see attachments:
Please update the description to inclue steps to reproduce this issue, as well as expected VS observed results.
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