Splash Potion Particles don't show up at the right location

When throwing splash potions, the particles do not appear where the potion lands. Instead, the particles appear to the negative-x, negative-z most corner of the block the potion lands on.

Steps to reproduce:

1.) Get any splash potion

2.) Throw it from above at the center of a block

3.) The particles do not appear where the potion lands.