Nunu & Willump bot skin - visual bug

Whevener you use W on Nunu while using the bot skin the snowball shows up fine. However, when you release the snowball it always disappears from the screen or teleports further along the path. This doesn't happen when using the default skin of Nunu & Willump.

The bug is only visual, enemies still get hit and knocked as supposed, the snowball is just missing on screen.