We rarely do.
Or rather, we rarely all do remember the same thing, in the same way, with the same impact as when it first happened.
Our memories drift and unless you are the one closest to the issue, they fade faster than most. That’s why it’s scary when you’re in a meeting discussing a bug or an issue that comes up and someone says – “oh remember that? We had this happen before, remember the impact from it? Oh yeah we did this and this workaround and now here we are… going through it again.”
Whenever you hear someone say – “Oh remember that?” – your first response should be, to write it down, now, immediately, so it is out of your head and the impact does not fade with time.
Your memory might forget, but JIRA/DevOps should not.