Needs Full Permissions to work
When you select only while using app it brings up the notification box saying it’s needs permission to be able to use, so you can’t select only while using app and needs full permission to track all the time, had multiple times that this app is using your location pop up even when the app is not been used. If this is has been done done to fix a bug then this is just a lazy solution to the problem (going by the update notes)