Bows, tridents and crossbows make weird slashing motion while triggering to aim.

Hi there.

When using a bow, trident or crossbow, it makes a weird slashing motion while triggering on a block. When triggering in the air it is perfectly fine. Here is a video attached. look at the bow when triggering. This makes using the weapons slower.

Steps to Reproduce:

1. Trigger the bow, trident and crossbow on a block , not the air on a mobile device. Like in the video (Not PC)
2. Notice when triggering in air it is fine but when triggering in block it is not.

Effect: Bows, tridents and crossbows.

Additional Information:

1. This bug is only present on all iOS and Android. It is only on Mobile devices and tablets. I have tried on Windows 10 and it is fine. 
Also this bug was already mentioned but not addressed properly or fixed please fix.