Favicon not longer used when added to home screen with iPhones

Hello,

I don't know if this is a regression of UserEcho, or a change made by Apple in most recent iOS versions?

1. Before, the favicon of my community was used as icon when bookmarking my UserEcho community to the home screen of my iPhone
2. Now, I get the default iOS behavior: the icon is a reduced snippet of the web page content, which is not as beautiful on the home screen

Is there any way to restore the previous behavior?

Best regards.