Root Skill immobilizes the caster during casting

Title: Root Skill immobilizes the caster during casting
Reproduction Rate: 100%
Blocker?
Details: When a player try to cast the root skill it is immobilized for the duration of the casting.
Steps to Reproduce: Cast root skill.
User Specs:
OS: Windows 10 (10.0.0) 64bit
CPU: Intel(R) Core(TM) i7-6700HQ CPU @ 2.60GHz (8) System RAM: 16338
GPU: NVIDIA GeForce GTX 1060 GPU RAM: 6052
SotA.QA.Win.64.826.Date.04.18.19
Area: Novia_R3_City_Brittany
Area Display Name: Central Brittany
Loc: (361.2, 31.7, 390.5)
Debug: Tm92aWFfUjNfQ2l0eV9Ccml0dGFueXx8KDM2MS4yNDgsIDMxLjY2NSwgMzkwLjUxNyl8KDAsIDAuNDkyLCAwLCAwLjg3MSl8NDE4LjQ0MjZ8MzcuNTIwOTd8Ni43MzA1MjQ=

 

@Antrax Artek, there are some spells that are set to be interrupted by movement while casting. this is deliberate. if you have "prevent movement while casting" checked in settings, then you'll be held still while you cast it. if you don't, and you cast it and try to move during, you'll interrupt yourself. that's what the option is for and it doesn't hold you still unless the spell is one of the ones flagged for interruption.

 

Yea i well know how it works, i'm trying to understand if it is intended to works in this way specifically on the root skill, considering it is a skill used to prevent the target from moving and not the caster itself.
All other spells with similar effects (for example ice field/arrow or confusion) are not working in this way but they can all be used in movement, seems just big heals/dispels and aoes follow this rule I was wondering if this was a mistake in particular for the root skill.