in order to present the groups and make it easy to join them, I used to have a post with groups tag. So users could click one it and send a request from this page, and didn’t not had to go to the /g page.
With the last update, we decided to hide members for non-group members while keeping the group public. The thing is that now this small window doesn’t show up for non-group members. Also annoying if you want to send a msg quickly.