Why in the issuance of Yandex site c https?

Good day!

Strange problem with the results of Yandex.

If in Yandex to type a website address, it returns the first link with https, although the website uses the http Protocol, and what is most interesting - this problem is not at all compuetr, that is, someone gives http and someone with https
July 8th 19 at 15:32
3 answers
July 8th 19 at 15:34
1. It's not a "problem on one computer, which doesn't show up on the other" and personalized search results for a user.

2. Put in robots.txt the main site and the mirror.
July 8th 19 at 15:36
in publisher, select the main website with or without www, with or without ssl
July 8th 19 at 15:38
Michael, show domain, try to understand.

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