Hi,
If you have lets say for some reason an inventory full of empty blue prints, and you want to delete them trough the GUI.
Then its quite a way to do that. (Putting them in a chest and shoot that is a workaround)
Empty blueprint you can't right click.. so you can't trash it.
So you need to make first a blueprint of something. then right click it, and then delete it.
Well might not be a bug, but intentend behoivor, but its a hussle to do this.
I have read more topics about this, that peope can't get rid of them, but then te anwser is trash them. (but that only works when there is a blueprint already setup, or i must be mistaken)