google CHROME removed https://www from bar

Are you using WordPress? If you leave the default installation parameters it will redirect the www to without the www.
 
I believe this works for windows as well - http://osxdaily.com/2018/09/11/show-full-url-subdomain-chrome/
 
It is browser default :3 If you try to go http:// site, browser show it with warning. https:// is secure and chrome not warning you
 
Exactly as mentioned above it not a warning or anything, it is working the way it is designed. If at all any site is not secured(https) it will simply display not secure with the address else simply the address.
 
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