In CastingContext.isVecInRange the comment "we use the eye position cause thats where the caster gets their "position" from" is present before the check for whether the vec is in range of a cleric circle - this check is done relative to the player's eyes.

if (this.spellCircle.activatorAlwaysInRange && vec.distanceToSqr(this.caster.eyePosition) < range * range)

However lower down where the distance check is actually done for when the player is casting, the check is instead done against the player's feet

if (vec.distanceToSqr(this.caster.position()) < Operator.MAX_DISTANCE * Operator.MAX_DISTANCE)

(also it's mildly annoying to me that the file ends with

        if (vec.distanceToSqr(this.caster.position()) < Operator.MAX_DISTANCE * Operator.MAX_DISTANCE)
            return true

        return false

instead of

return vec.distanceToSqr(this.caster.position()) < Operator.MAX_DISTANCE * Operator.MAX_DISTANCE

)