So I was on crafting screen and accidentally pressed ‘s’ which stands for “[s]how/hide”. Pressing it removed receipt from the list and counter of “hidden” receipts goes up. I guess it’s very handy in some cases.
But I can’t figure out how to “un-hide” a receipt! 
Found it. Need to search for " h:yes" then you get a list of receipts that you’ve hidden. Pressing “s” on them now returns them to the crafting list.
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