Unlike other projectiles, the wind charge is spawned slightly in front of the player when thrown instead of being centered on the player's eyes. On Java Edition, it seems to be spawned around ~0.8125 blocks away from the player, but on Bedrock it seems to be spawned around ~0.3 blocks away from the player.

While this may not seem like a huge difference, it can affect the timing of the shots and confuse players switching between editions, especially when MCPE-178886 gets fixed. It's also likely to be one of the causes of MCPE-178890.