To reproduce, use 1 gunpowder and 3 paper to try and craft a duration 3 rocket. For me, it does not craft anything, as if it is not the correct recipe. Same issue with duration 2 rockets.
MC-305153
Can't craft flight duration 3 rockets
Resolved
Invalid
0
u have to use 3 gunpowder and 1 paper instead of 1 gunpowder and 3 paper, its not a bug