Hand extends and retracts after suspending and reopening game

After suspending and reopening Minecraft, I noticed my hand was doing a visual glitch where it extended and retracted. I only noticed this after reloading the game, and I am not sure it happens consistently.

How to Reproduce

1. Open a world on your phone.

2. Suspend the app.

3. Reopen the app and wait for the world to load

Expected results

Nothing is wrong.

Observed results

The hand extends and retracts weirdly.

Postscript

I have not done much testing on this. I only noticed this in my world after playing with my friends, so I would appreciate it if someone else helped me with this.