One day, you are walking across the nether plains, then all of a sudden. BOOM! You hear a fire charge go off next to you. Quick! Pull out your bow & start shooting. The ghast fires again, and you hit it! The ghast is gone, and so is it's charge?

Short story shorter:
When a ghast has shot a Fire Charge, and then is killed, the Fire Charge is then erased from the entities list. (Also happens when game is turned to peaceful after the shot is fired)

Devices:

-Amazon's Kindle Fire HDX 8.9 (3rd Generation)
-Android 4.4.3

-Amazon's Fire HD 10
-Android 5.1

-Apple's iPhone 5S
-iOS 9.x.x