Google Calling Time on Internet Explorer 10 Support for Google+ in October
Over two years after Microsoft discontinued support for Internet Explorer 10, Google has announced they will stop supporting the legacy browser on Google+ starting October 23, 2018. It means that Google will no longer do backwards compatibility testing for IE 10 and rendering issues or access to certain features could be limited after that date.
Technically Google across all of G Suite only supports the latest version of Internet Explorer, v11, as well as Microsoft Edge from the Redmond, Washington company. This is more-or-less just solidifying that stance in relation to G+.