Stock status is not showing

Please see this video: https://youtu.be/Ad0N8LxReVo

I found that it works as you say but it does not display the changed status when looking at the shop or in categories.

Here is a screenshot of the shop
https://www.dropbox.com/s/zj49s9dsfnqzyud/Screenshot%202019-01-01%2015.46.38.png?dl=0

Here is a screenshot of the admin
https://www.dropbox.com/s/cstzepqq29yz8df/Screenshot%202019-01-01%2015.51.09.png?dl=0