Error when adding a group with a comma or whitespace to space permissions

Summary

It's not possible to add a group whose name contains a comma to the space permissions.

Steps to Reproduce

1. Create a group whose name contains a comma or whitespace.
2. Go to a Confluence space and edit its permissions (the default space permissions are also impacted).
3. Type the name of the group which contains a comma or whitespace on its name.
4. When the auto-complete returns it, click on it to select it.
5. Click the Add button

For groups with whitespaces, the group will not be displayed on the picker.

Expected Results

The group is added to the list of groups with permissions on this space.

Actual Results

Two error messages are displayed saying no groups were found. For groups with whitespaces, the group is not displayed.

Notes

• Confluence "believes" there are at least 2 groups trying to be added and each group is separated by commas, when in fact there is only one group trying to be added, only this group has a comma in its name.
• Bug fix should still support adding multiple groups at one time

Workaround

• Add a counter-slash (escape character) before the comma or change the group name and remove the comma.
• For groups with whitespace, delete and re-create the group as group rename is not supported.