joined:Aug 20, 2019
I've migrated a site of mine a week ago to https by 301 redirections.
Everything works and I've validated that the favicon is accessible.
All the pages that are yet to be shown as https on google, are shown with a valid favicon in the mobile search results.
All the https pages are shown without(!) the site's favicon, and with the general dull globe icon.
BTW, I also have 2 sites with the same template, same favicon and both use https -
One of them shows favicon on SERP and one doesn't. So that just adds to my confusion.