When there are two fields groups with two fields each, when the user try to add another field on the field group, the screen becomes blank. If the user return to the form after that, the field option stills appear on the middle of the screen.
Steps to Reproduce
- Go to Content & Data > Forms
- Add a Form;
- Add an Numeric Field;
- Add another Numeric Field to make a Fields Group;
- Resize the Field group so it takes only half of the form;
- Add another field group with two fields, on the side of the first (for example, Text);
- Add another field type to the fields group;
The field is added to the field group.
The form builder becomes blank.