Calibrated Skulk Sensor triggers on empty fireworks

When launching fireworks with no star, at the end of its travel, a calibrated skulk sensor calibrated to trigger only on explosions, triggers, even though no explosion was heard.

What I expected to happen was...:
I expected the skulk sensor to not trigger on empty fireworks, since there's mo sound emitted.

What actually happened was...:
Calibrated Skulk Sensor triggers on empty fireworks that make no noise on end of travel.

Steps to Reproduce:
1. Put Calibrated Skulk Sensor on max redstone level (15)
2. Fire firework rocket with no star towards it
3. See it trigger without having an audible sound source