Previously, Firework Rockets shot by Crossbows could explode anywhere, upon colliding with Blocks or Entities and the most common one, in the Air.
Currently it seems like only explode when the Rockets collide with Mobs, but outside of that it doesn't explode anywhere else unlike before.

Upon collide with a Pillager:

Shot at the Air:

Even tried to shoot a Tree, but nothing happened:

To reproduce this issue, you simply need to grab a Crossbow with some Fireworks that contains explosions and shoot them at Air.