Minecraft wiki entry for Arrow, associated text: By default, arrows fly slightly offset to the right. If the player stands close to a wall and fires several arrows without moving the crosshair, the arrows cluster around a point slightly to the right of the crosshair. If the player switches their main hand to be the left hand in options, the arrows instead cluster to the left.
Arrows fired at Nether Portals often skip through the portal block completely and fail to collide, thus continuing through to the opposite side of the block.
Arrows stuck in blocks vibrate upon a world reload.[7]
Although endermen teleport when hit by any tipped arrow, they are still given the said effects while avoiding arrow damage.
In Bedrock Edition, even if a tipped arrow is blocked with a shield, while the direct damage from the arrows is negated, the player still gets the effect from the tipped arrow.[8]