POE 2 - Channeling skill with no movement penalty while casting.

Greetings.
I discovered inappropriate behavior with Bonestorm skill.

Currently at level 19, so cant test it on other channeling skills.

Description:

Start move in any direction [optionally] → click RMB [my bind on a skill is there] → wait until one bone spike is almost formed → hold RMB = resulting no movement penalty during channeling.

Video with replication:
YouTube - https://youtu.be/MeuD-KumrnY

Can confirm, This works exactly like this. I currently use WASD movement, and once one bone spike almost forms, you can then hold the skill and have 0 movement penalty.

Noticed this today, still possible on the day of this reply.