As you can see in the pictures attached, each of them about 20 seconds in between, the clouds that is in front of the Sun does not block the Sun rays nor creates a shadow in the world.

There is an attempt to recreate the real behavior, as I can guess by the looks of it, but it's quite unreal and weird.

When a cloud pass in front of the sun:

1. The Sun nor its rays should be seen.
2. The world should shadow a bit as a consequence.