Hi Ali,
Thanks for reaching out to us. Please try to check this link- https://wptestbox.com/wishlist/
It is a staging site with a basic theme and plugins installed. Please let me know if you found the same.
Also, record your screen to understand what parameter you found. So that, I can forward this to our development team.
Thank You
Core Web Vital problems
Ali Baradaran Kashani
The plugin causes big layout shift on the product pages.
by disabling the plugin the problem will resolve.
It causes low CLS score and indexing problems.
I’ve tried to solve the problem using wp-rocket cache plugin by minifying and deferring and delaying the JS file. Minifying and deferring the JS file will broke the website. Delaying it helped a little but couldn’t solve the problem completely.