Sporadically defective website | WordPress.org

Today I was informed by an SEO tool that there is no page title on 3 of our pages.

I went to the pages and remembered that I had this problem before and it was easily fixed by refreshing the cache.

Here is the link to the screenshot of the linked page: https://disk.yandex.com/i/7NjQ1C-tZ2jpZQ and https://disk.yandex.com/i/_KYYjyCnkweX6Q

When I view the page logged in, everything is correct.

The other two pages https://disk.yandex.com/i/l_8aHAKXfzhGgQ and https://disk.yandex.com/i/5pX1N96yZnysZw

Is such a problem known or simply due to the cooperation of the plugins ActivityPub and WP-Optimize – Clean, Compress, Cache.

(I just see AP has an update to 2.5.0)

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

 

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