Bug with animator (apparently with transitions)

Hi, I was testing my 2D movement and faced a problem:
When the player goes and jumps in one direction, then changes the direction in midair and keeps going, when it falls to the ground, it looks in the opposite (1st) direction for 1 frame, after that the animation starts and everything work as it should.
All that stuff happens in this statement:

Code (CSharp):

1. anim.enabled = true;
2.  
3.                 if (Move == 1)
4.                     anim.SetInteger("AnimMode", 1);
5.                 else if (Move == -1)
6.                     anim.SetInteger("AnimMode", 2);

I have a transition to empty Idle box in Animator from start and 2 transitions each from Any state to the WalkRight and WalkLeft boxes.

I don't know how to describe this problem properly but if you have any thoughts on what should I check in my code / animator or assume what could cause that type of a problem I'll be happy to hear that.

 

This is the full code of my Player movement if you don't mind taking your time to find the issue

Code (CSharp):

1. Rigidbody2D rb;
2.     GroundCollider grColl;
3.     public float runSpeed = 5f, jHeight = 330f;
4.     float Move;
5.     bool Jump;
6.  
7.     Animator anim;
8.     SpriteRenderer rend;
9.     [SerializeField] Sprite Right1, Right2, Left1, Left2, rJump1, rJump2, lJump1, lJump2;
10.     float lastPosY;
11.     bool looksRight = true;
12.  
13.     GroundCollider leftColl, rightColl;
14.  
15.     void Start()
16.     {
17.         rb = GetComponent<Rigidbody2D>();
18.         grColl = GameObject.Find("GroundCollider").GetComponent<GroundCollider>();
19.  
20.         rend = GetComponent<SpriteRenderer>();
21.         anim = GetComponent<Animator>();
22.         lastPosY = transform.position.y;
23.  
24.         leftColl = GameObject.Find("LeftCollider").GetComponent<GroundCollider>();
25.         rightColl = GameObject.Find("RightCollider").GetComponent<GroundCollider>();
26.  
27.         Physics2D.IgnoreLayerCollision(8, 9);
28.     }
29.     void Update()
30.     {
31.         // Check for Move, change Sprite
32.         if (Input.GetKey(KeyCode.D) && !rightColl.isColl)
33.         {
34.             Move = 1;
35.             looksRight = true;
36.         }
37.         else if (Input.GetKey(KeyCode.A) && !leftColl.isColl)
38.         {
39.             Move = -1;
40.             looksRight = false;
41.         }
42.         else if (Input.GetKeyUp(KeyCode.D) || Input.GetKeyUp(KeyCode.A) || rightColl.isColl || leftColl.isColl)
43.             Move = 0;
44.  
45.         // Check for Jump
46.         if (Input.GetKeyDown(KeyCode.W) && grColl)
47.             Jump = true;
48.         else if (Input.GetKeyUp(KeyCode.W))
49.             Jump = false;
50.  
51.         // Animation
52.         if (grColl.isColl)
53.         {
54.             /*if (looksRight) // Set Ground Sprite
55.                 rend.sprite = Right1;
56.             else
57.                 rend.sprite = Left1;*/
58.  
59.  
60.             if (Move == 0)
61.                 anim.enabled = false;
62.             else // // Bug with this statement: walk & jump in one direction, change direction in midair, when it falls it looks in the opposite (1st) direction for 1 frame, then starts walking normally
63.             {
64.                 anim.enabled = true;
65.  
66.                 if (Move == 1)
67.                     anim.SetInteger("AnimMode", 1);
68.                 else if (Move == -1)
69.                     anim.SetInteger("AnimMode", 2);
70.             } // //
71.         }
72.         else
73.         {
74.             anim.enabled = false;
75.  
76.             if (lastPosY + 0.01f < transform.position.y) // posY increased
77.             {
78.                 if (looksRight)
79.                     rend.sprite = rJump1;
80.                 else
81.                     rend.sprite = lJump1;
82.  
83.                 lastPosY = transform.position.y;
84.             }
85.             else if (lastPosY - 0.01f > transform.position.y) // posY decreased
86.             {
87.                 if (looksRight)
88.                     rend.sprite = rJump2;
89.                 else
90.                     rend.sprite = lJump2;
91.  
92.                 lastPosY = transform.position.y;
93.             }
94.         }
95.     }
96.  
97.     void FixedUpdate()
98.     {
99.         // Move
100.         if (Move != 0)
101.             rb.transform.Translate(runSpeed * Move * Time.deltaTime, 0, 0);
102.  
103.         // Jump
104.         if (Jump && grColl.isColl)
105.         {
106.             rb.Sleep();
107.             rb.AddForce(new Vector2(0, jHeight * Time.deltaTime), ForceMode2D.Impulse);
108.             Jump = false;
109.         }
110.     }