Why does a window appear to close when set?

[beaujolais]

Why does a window appear to close when set?

Thanks.

 

[myanmargems]

Because the setting prevent the light from htting the basment of the stone thus make window dissapear.

But still there is no fire.

 

[beaujolais]

Thanks Myanmar. I just looked at your website - fantastic. I hope you have been safe regarding the recent storm.