Stops Mode is a way to show trips split into PU and DO entries instead of a combined trip view. To see stops view, click the Stops button at the top of your screen. You will see each stop split into 2 lines, one for the PU stop (with the icon for that trip next to the name, and one for the DO stop, with no icon next to the name.
You can toggle stops view off by clicking the Stops button again. It may take some getting used to, be we feel the new view provides more information and can help when trying to schedule many trips onto a bus at once.