If you light an entire pack of firecracker (25 firecrackers by default) at once the item will disappear without a trace, the game will display the usual “Sssss…” message but no explosion will actually happen. It worth mentioning that if you lit a part of the pack, say 5 firecrackers, those 5 crackers will explode like normal but if you then lit up the remaining 20 they won’t explode at all.
Lit up 24 firecrackers in the pack and they explode but the remaining 1 will not.
This only happens to pack of firecrackers, not the singular firecracker item (They are two different items).