Top Sites - Offline Icon displayed for PWA site
Hi, I'm a developer and I have a progressive web app website. It is HTTPS only and is on the HSTS preload list.
In the top sites list the icon recently changed to offline though the site has never been down. It's been so for about a month.
Can anyone tell me why that is happening? It's important to me that any visitors see the correct icon displayed in top sites.
Thanks in advance Steve