When adding and removing members from a course group there is a table containing the lists of users.
One place this is used is:
- Create a course
- Add a number of users
- Go to Course administration > Users > Groups
- Add a group, adding a description and a picture
- Go to edit the members of the group
This issue is concerning the table that can be found around the members. I have created another issue for the table that contains the group image and description (https://tracker.moodle.org/browse/MDL-49765).
There are a number of places that have a similar interface, but I am not yet sure if they are all related.