Sorry after update from woocommerce to 3.0.1 the site does that automatic, same problems with grid/list, preview not showing
url http://www.princensport.nl
Hi I recommend you do not rush to be updated and wait until it becomes more stable and wait for at least version 3.0.1
Also, we need time to prepare the updates of the template .
You can download previous stable version here https://github.com/woocommerce/woocommerce/archive/2.6.14.zip
Thanks
Thx Alex
You are welcome