PC Hitting a stationary Brain of Cthulhu and killing all remaining Creepers with the same hit causes BoC to disappear

[BadPiggy1024]

Steam or GOG

Steam

Single Player/Multiplayer

Both

Operating System

Windows 10

Terraria Version

1.4.3.6

Controls Used

Keyboard/Mouse

How to reproduce (easiest done in Journey Mode):

1. Summon Brain of Cthulhu
2. Leave one Creeper, and kill all the others.
3. Wait until the BoC moves onto the player and becomes stationary.
4. Use any method to kill all remaining Creepers while hitting the BoC's hitbox. (easiest done with AoE)
5. The BoC will disappear, but its boss bar will remain there, and the teleport sound will be repeatedly played.
6. After some time the BoC's boss bar disappears.

Similar bug: PC-Brain of Cthulhu ragequits if you hide in a box.