Yes, that has happened to me. It probably is on the feed but you can't see it. Probably some glitch. I just looked and couldn't find a new hub from you, so I don't know if it did go through or not. You might try hitting the share with followers button. There have been times, comments on hubs wouldn't show on the feed for a while. Currently, when I hit share with followers, it doesn't show up on my feed, but I know that it does for my followers. That hasn't been working for me in a while. I have no idea why. I'll let you know if I see your hub on my feed.