Today’s task looked harmless from the outside: show unread notifications, let users mark them as seen, and put a red dot on the bell icon when there is something new. Classic mobile app stuff. Nothing dramatic. Just a bell, a list, a few cards, and ...

Today I worked on one of those bugs that sounds suspiciously simple when someone describes it. "When a new message comes in, the message screen updates. But when I open the chat, the message is not there. If I go back, refresh, and open it again, th...