Character Controller doesnt fall down

Questions & Answers
1

Hello There!
i recently staretd devloping a game, set in a top down isometric perspective. Since i dont need physics, i decided to go with a character controller for movement. and it works great movement wise! however, whenever the player object moves across a slope, it goes up, but then stays upo there, even if theres nothing underneath it. i dont udnerstand why. i did something similar before, and back then it did fall down. any1 know anything?

heres the movement script:

using UnityEngine;
using UnityEngine.InputSystem;

public class PlayerMovement : MonoBehaviour
{
    public float moveSpeed = 5f;
    public float rotationSpeed = 10f;
    private CharacterController controller;
    private Vector2 moveInput;
    private Camera mainCamera;
    private Animator animator;

    private void Start()
    {
        controller = GetComponent<CharacterController>();
        mainCamera = Camera.main;
        animator = GetComponent<Animator>();
    }

    public void OnMove(InputAction.CallbackContext context)
    {
        moveInput = context.ReadValue<Vector2>();
    }

    private void Update()
    {
        Vector3 move = new Vector3(moveInput.x, 0, moveInput.y);
        Vector3 moveDirection = mainCamera.transform.TransformDirection(move);
        moveDirection.y = 0;

        controller.Move(moveDirection.normalized * moveSpeed * Time.deltaTime);

        if (moveDirection != Vector3.zero)
        {
            Quaternion targetRotation = Quaternion.LookRotation(moveDirection);
            transform.rotation = Quaternion.Slerp(transform.rotation, targetRotation, rotationSpeed * Time.deltaTime);
        }

        animator.SetBool("isRunning", moveDirection != Vector3.zero);
    }
}