Autocomplete suggestions inside modal forms are not visible in 3.10

Please test this in Edge, Firefox, Safari and Chrome Test the overflow login as admin create at least 5 courses and enrol yourself navigate to the site calendar click the new event button on 'type of event' select course on the course search input click the arrow button verify you see all 5 courses, the dropdown should overlap the scrollable container Test scrolling modal add a new assignment activity to a course in the assignment settings page click the 'choose' button for accepted filetypes verify the action buttons ("Save changes", "Cancel") in the footer area are visible at all times. verify there is a vertical scrollbar, allowing to view the rest of the content in the modal's body. Test autocomplete in longer scrolling modals As the admin navigate to Site Administration > Users > Privacies and Policies > Data registry Click the "Edit" button Select the purposes option Click the "Plus" button Click the Lawful bases autocomplete field Scroll the modal down or up Verify the dropdown sticks to the autocomplete field when scrolling down Click the "Sensitive personal.." auto complete field Scroll the page up and down *Verify" the dropdown sticks to the autocomplete field unless it reaches the bottom of the browser window, then it will overlap the autocomplete field.