Minecraft dispenser

Put the summary of the bug you're having here

What I expected to happen was shot fire charge from dispenser:
I put fire charge in dispenser and activated it

What actually happened was dispenser shot out Ender Dragon charge:
Describe what happened here

Steps to Reproduce:
1. I put fire charge into dispenser
2. I activated it
3. Dispenser shot out Ender Dragon charge thing (like Ghast fire ball but it was purple and on block contact it was explode in purple particles, like Ender Dragon's breath, that huts you when you walk into them. Explodion thosen't destroy blocks and these not ignite fire.)

Is that bug? if so Please fix it.