Invalid Certificate Prompt When Browsing a Site

Ascii2
By Ascii2 in Maxthon Support & Discussion,
This posting is to report a bug. I receive an Invalid Certificate dialog box on Maxthon 5.2.4.3000 when trying to view some websites.  My system time and date are correct. I use Maxthon v5.2.4.3000 on Windows XP Professional with Service Pack 3. Three example websites are: https://vivaldi.net/ https://easylist.to/ https://www.cloudflare.com/ The issue may be reproduced by visiting one of the example websites for the first time during the browsing session.  When that happens, the following dialog box is presented:  [Cannot post picture in forum; I receive forum message " The page you are trying to access is not available for your account. "] I have copied the text from Maxthon Security information for the example webpages and display them below. For "https://vivaldi.net/": https://vivaldi.net View requests in Network Panel Connection Protocol TLS 1.2 Key exchange ECDHE_ECDSA Key exchange group X25519 Cipher CHACHA20_POLY1305 Certificate Subject ssl509072.cloudflaressl.com SAN ssl509072.cloudflaressl.com *.vivaldi.net vivaldi.net Valid from Fri, 27 Apr 2018 00:00:00 GMT Valid until Sat, 03 Nov 2018 23:59:59 GMT Issuer COMODO ECC Domain Validation Secure Server CA 2 Open full certificate details
For "https://easylist.to/": https://easylist.to View requests in Network Panel Connection Protocol TLS 1.2 Key exchange ECDHE_ECDSA Key exchange group X25519 Cipher CHACHA20_POLY1305 Certificate Subject sni191559.cloudflaressl.com SAN sni191559.cloudflaressl.com *.all-cardealers.com Show more (95 total) Valid from Wed, 19 Sep 2018 00:00:00 GMT Valid until Thu, 28 Mar 2019 23:59:59 GMT Issuer COMODO ECC Domain Validation Secure Server CA 2 Open full certificate details
For "https://www.cloudflare.com/": https://www.cloudflare.com View requests in Network Panel Connection Protocol TLS 1.2 Key exchange ECDHE_ECDSA Key exchange group X25519 Cipher CHACHA20_POLY1305 Certificate Subject cloudflare.com SAN cloudflare.com www.cloudflare.com Valid from Fri, 28 Oct 2016 00:00:00 GMT Valid until Fri, 02 Nov 2018 12:00:00 GMT Issuer DigiCert ECC Extended Validation Server CA Open full certificate details
I notice that the Maxthon 5 provided Security information appears quite similar. Maxthon v5.2.4.3000 has a button in the site Security information area and is labeled "Open full certificate details", but the button does not do anything (this may be another bug). I did find what I believe to be the same issue referenced in an older Maxthon Community Forums thread; it is located: The older thread appeared to reference the issue but did not actually appear resolved.  Instead, user BugSir006 stated that:  " The issue of incorrect unsafe warning when accessing Gmail(under some special scenes) has been fixed in 5.1.3.200.".  The problem referenced in these threads may be different than the one fixed.
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