This is not a regression as it's been happening since Natty. Clicking the launcher when there are multiple windows of an application open actually does different things (see: https://bugs.launchpad.net/unity/+bug/940686). Regardless, it is indeed a bug and only one window should be brought forward.
This is not a regression as it's been happening since Natty. Clicking the launcher when there are multiple windows of an application open actually does different things (see: https:/ /bugs.launchpad .net/unity/ +bug/940686). Regardless, it is indeed a bug and only one window should be brought forward.