Custom formatting doesn’t apply

Hi! In local version of BLC I have ‘Apply custom formatting to broken links’ option enabled. And I have this code there:

.broken_link, a.broken_link {
text-decoration: line-through;
}

However, the code applies only when I am logged-in as admin (the <style></style> tag is automatically added in the code). Here is a screenshot: https://skrinshoter.ru/saEejCbNMeQ. But when I am not logged-in, then there is no such code on the page, so the rule text-decoration: line-through; doesn’t apply to broken links. Here is a screenshot: https://skrinshoter.ru/saEjVUV3eWt.

I tried to add !important in your plugin’s tab, but it didn’t help. I also tried to duplicate the code in my style.css file, but it didn’t help as well.

Maybe, the problem is from your side?

The page I need help with: [log in to see the link]