Ever heard of a bug that allows people to make explosives?

Has anyone ever had something popping into their crafting menu without researching it? Like a bug or something? I’ve never personally seen it but we have a guy saying it happened to him. None of us believe him but we’re asking around just in case.

If you researched how to make C4, the plans to make Explosives will likewise be learned.

Really? Wasn’t like that for me.