block vertical scrolling of the site page in browsers. Occurs randomly for some use

Website, Application, Performance
1

What is the name of the domain?

https://academy.be-english.com.ua/

What is the issue you’re encountering

block vertical scrolling of the site page in browsers. Occurs randomly for some users who access the site via VPN

What steps have you taken to resolve the issue?

We’ve carefully tracked down the error - “scrolling on lesson pages is lost, randomly for some students” - on the part of the site and plugins. Plugins do not cause this error.
After a thorough analysis of user data and Google consol error analysis, we found the following errors:

  1. Scrolling disappears for those users who access the site via VPN. When the VPN is turned off, the page load works fine!
  2. For some users, the page load takes place after the page cache is completely refreshed.
2

Are you able to test this and open the developer tools “network” tab. Then when you look at the waterfall when reproducing this what is the request that is taking the largest amount of time?

Once you find that resource can you click on it and paste the headers of that request along with the timing section. So we can see what is the request having the issue with loading.

If you can do this for both scenarios and provide those screenshots that would be greatly appreciated it will also help us determine if this is a request being filled by the origin or a cache hit.

3

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