Found while testing MDLQA-12088

See attached screenshots:

It can be reproduced with the following steps:

1. As a teacher, log in to a course and create a new Assignment and a Forum.
2. In both, set the completion tracking to 'Students can manually mark the activity as completed'.
3. Create a new Page.
4. Expand the Restrict Access section and click 'Add Restriction'
5. Select 'Activity completion'
6. From the dropdown pick your Assignment as the required item
7. Click 'Add Restriction' again and pick 'Restriction set'
8. Add two more restrictions within the set by using the 'Add Restrictions' button inside this grey box
9. Set one to 'Activity Completion' and pick the Forum from the dropdown
10. Set the other to 'Date' and set a date in the future

The form for the date field will be misaligned, each form field is on a separate line (clean they are on the same line)