Problem with OnMouseDown(not registering clicks in some situations)

Hello, guys! So, as you understand I have a problem with onMouseDown. I have randomly generated doors, and script for it. Almost all time it works, but sometimes it's just not registering mouse events,like mouseDown or mouseOver. Here is a door script:

 void OnMouseDown()
     {
         open = !open;
         SpriteRenderer doorSR = GetComponent<SpriteRenderer>();
         BoxCollider2D doorColl = GetComponent<BoxCollider2D>();
 
         doorSR.color = open ? new Color(doorSR.color.r, doorSR.color.g, doorSR.color.b, 0) : 
             new Color(doorSR.color.r, doorSR.color.g, doorSR.color.b, 255);
 
         doorColl.isTrigger = open;
         Debug.Log("Click, open = "+open);
     }
     void OnMouseOver()
     {
         Debug.Log("MouseOver");
     }