When I drag and drop an on page URL from Safari into a Dynalist running in the slide over it creates an underlined link for the URL.
If you go to a full screen display of Dynalist the link will work but it is not editable. Also the link doesn't actually save although some times it leaves the link description. If I go to another document and back again the link is gone.
This on IOS 11.1 on an iPad Pro.
The drag and drop for images works ok.