It would be nice if jira user could filter by "affected version" as same as "fix version".
This feature is useful for the user who tracking problems/bugs by "affected version".

We need to be able to manage issues by "affected version" in backlog since Improvements are a requirement for features that have already been released.
If it is a cloud service, there is only one latest version. However, if it is open source project, all the source code is released for each version. Bugs occur not only for the latest version but also for past released versions. We need to focus "affected version" when manage them.