My Lerp function only works one way but not the other way

Question

I have a dynamic FOV and crouching script for my player which both use the Lerp function for smooth camera movement, but it only works for the increase in FOV and decrease in height. When the FOV and height return to normal, it just snaps back instantly rather than giving the smooth movement expected.

Crouching:

if (Input.GetKey(KeyCode.LeftControl))
        {
            characterController.height = Mathf.Lerp(characterController.height, 0.5f, 10f * Time.deltaTime);
            canRun = false;
            canJump = false;
            walkingSpeed = 2f;
        }

        else
        {
            characterController.height = Mathf.Lerp(characterController.height, 2.0f, 10f * Time.deltaTime);
            canRun = true;
            canJump = true;
            walkingSpeed = 4f;
        }

FOV:

if (Input.GetKey(KeyCode.W) || Input.GetKey(KeyCode.A) || Input.GetKey(KeyCode.S) || Input.GetKey(KeyCode.D))
            {
                Camera.main.fieldOfView = Mathf.Lerp(Camera.main.fieldOfView, 65f, 10f * Time.deltaTime);
            }

            else
            {
                Camera.main.fieldOfView = Mathf.Lerp(Camera.main.fieldOfView, 60f, 10f * Time.deltaTime);
            }

I've looked online but no one seems to be having this issue and the code looks like it should work. (I am new to this so it's probably something really obvious)

Answer 1

Code looks fine, also works fine. Tested the FOV here:

https://i.imgur.com/Wo6a0hP.mp4

You probably have another script manipulating the FOV, causing it to snap back immediately.