When you login to the VRChat website (new tab, first time) the friends list does not load properly and won't show friend until you press More or reload the page.

https://i.imgur.com/Cocuat2.png

This only happens the first time you load the page, but won't happen if you log out and in again.

This also prevents the push notifications from displaying (while list isn't loaded)

Edit: Tested with Chrome (75.0.3770.100) and latest Edge