My website looks broken when using LTCache

Hi. I am using the LTCache plugin with WordPress on my website. When I visit the website first time, for the first milliseconds, the website looks broken but after that it is fine. But when I use the website with any websites that can take screenshots for a site, it always looks broken. This is my website link: You can test it on your browser and it will be fine probably. But test it on a responsive checker or on a website screenshot taker and look how it is broken. I attached a screenshot. Note that when I disabled LTCache the problem is gone. And I tried to turn off all the page optimization settings but it didn't fix it.