When shooting a bow and arrow, the arrow appears to fall directly in front of the player.
The bow & arrow usually shows the trajectory of the arrow until it hits something.
The bug involves the arrow appearing to hit a barrier and fall to the ground a few blocks from the player. The arrow however acts normally, and can be picked up from where it was aimed, however, visually the arrow appears to fall to the ground.
Related issues
Comments

Duplicate of MC-417