As an user, when I try to "edit" a planned report with a new group email it rewrite the name of the group

As a user, when I try to "edit" a schedule report group email it rewrites the name of the group.
In order to reproduce the problem you just need to follow the steps:

1. Add a schedule report with the option "send email" on
2. Add two or more users on the label "To"
3. If you add a group, it'll have the same number of appears as the number of users added on the step bellow