Hello everyone! How are you all doing?

This happens only when the characters is on a vertical moving platform. For horizontal movements everything is fine. I'm using a KinematicBody being moved by a moveandslidewithsnap function. All the margins are already set to 0.001. The platform is being moved by an AnimationPlayer set to Physics.

Thanks!

A GIF showcasing the issue:
https://imgur.com/8k3NjQQ

Here's the player script:

extends KinematicBody

export var gravity = 3000

export var move_speed = 750

#jump
export var fall_multiplier = 1
export var low_jump_multiplier = 10
export var jump_force = 1300
export var max_fall_speed = 3000

var y_velo = 0

var snap_normal = Vector3.DOWN setget set_snap_normal

func movement(delta):
var move_vec = Vector3()
if Input.is_action_pressed("move_left"):
move_vec.x -= 1
if Input.is_action_pressed("move_right"):
move_vec.x += 1
move_vec = move_vec.normalized()
move_vec *= move_speed
move_vec.y = y_velo
move_and_slide_with_snap(move_vec * delta, snap_normal, Vector3.UP)

var grounded = is_on_floor()
y_velo -= gravity * delta

if grounded:
if Input.is_action_pressed("jump"):
set_snap_normal(Vector3(0,0,0))
y_velo = jump_force
if y_velo <= 0:
set_snap_normal(Vector3.DOWN)
y_velo = 0
if y_velo > 0 and Input.is_action_just_released("jump"):
y_velo -= 30 * (low_jump_multiplier)
elif y_velo < 0:
y_velo -= 7 * (fall_multiplier)

func set_snap_normal(new_snap_normal):
snap_normal = new_snap_normal

func _physics_process(delta):
movement(delta)
in Engine