I just updated to the new site icon setting in Customizer, but it isn’t showing up. Here’s my site URL:
The relevant link tags seem to be showing up in the page source:
<link rel="icon" href="https://cdn.drbrighten.com/drbrighten/20180916160824/cropped-Dr.B-32x32.png" sizes="32x32" />
<link rel="icon" href="https://cdn.drbrighten.com/drbrighten/20180916160824/cropped-Dr.B-192x192.png" sizes="192x192" />
For some reason these aren’t showing up in Chrome for me on the main site pages, though it does work in wp-admin. It does seem to work in Firefox as well.