Service Catalog Admin. 

When adding a dynamic section and selecting from a list that requires scrolling, items are not displayed when attempting to scroll down - the scroll bar jumps back to the top. This happens after a number of dynamic sections have already been created, greying-out the visible items on the screen. 

The ability to select the ‘hidden’ items still remains by clicking on a space within the list but the scrolling feature does not work thus making it unable to select the item preferred.