How do I fix flickering in corners from move_and_slide?

Question

I've seen a lot of threads about this but no solutions for 2D. I've got moveandslide on and when I walk into a tileset corner, my player starts rapidly switching between being on the ground and being in the air. How can I fix that?

Comments

Could we see some example code, or a screenshot of what is happening?

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func _physics_process(delta):
var x_input = Input.get_action_strength("ui_right") - Input.get_action_strength("ui_left")

if x_input != 0:
    $AnimationPlayer.play("run")
    motion.x += x_input * ACCELERATION * delta
    motion.x = clamp(motion.x, -MAX_SPEED, MAX_SPEED)
    sprite.flip_h = x_input < 0
else:
    $AnimationPlayer.play("idle")

motion.y += GRAVITY * delta

if is_on_floor():
    if x_input == 0:
        motion.x = lerp(motion.x, 0, FRICTION)
    if Input.is_action_just_pressed("ui_jump"):
        motion.y = -JUMP_FORCE
else:
    $AnimationPlayer.play("jump")
    if Input.is_action_just_released("ui_jump") and motion.y < -JUMP_FORCE/2:
        motion.y = -JUMP_FORCE/2
    if x_input == 0:
        motion.x = lerp(motion.x, 0, AIR_RESISTANCE)
motion = move_and_slide(motion, Vector2.UP)