Last week one of my midterms was posted on Campuswire. When the post containing the exam PDF is posted on Campuswire, I got a red dot on the notification icon. However, when I clicked on the notification icon, the page showed "No notifications yet", and there was no new post under class feed. Therefore I thought that was a visual bug and kept waiting for the exam PDF. 10 minutes later, another post was posted and successfully updated on my screen, and the information in this post make me realize I missed the exam PDF post for 10 minutes and decided to refresh the whole page. Then the post containing the exam PDF appeared on my screen.