We have around 500 bugs already created in our database.

1. Create a group called "us-group" and assigned a couple of users (who reported bugs already) to the group.

2. Goto "Find issues", select "Reported By: Specify Group" and enter "us-group".

3. You would expect a listing of all the bugs reported by the users who belong to "us-group" (irrespective of when the group is created i.e. before/after the bug was created). It is not showing the list.