Why is MeshRenderer not disabled?

Question

Unity

I have an object prefab, it is on the stage, it also has a script that:

Provided that it is in the camera's field of view - turns on the rendering of the object

Otherwise, it turns it off

The problem is that when I turn away from this object, it is for a second blinks (as if trying to disable rendering but can't) and reappears

. What could be the problem?