Recently Condes imposed a gap between the control circle and the red line to the next control. For very close controls this can result in no red line at all, or worse, just a red dot midway between. This is a deliberate attempt to prioritise map detail over red line, but you might not like it and it can be changed. 

Such settings are found in Canvas > Course overprint symbols and dimensions, and this particular one is in the submenu Additional dimensions and fonts > Gap between circle and leg line. Changes apply to every control so if you want to tune this differently for each control you need to set the gap to zero and then use the Cut line tool to put in a gap where required - very fiddly!

Remember you can also uncover map detail by kinking the red line, using the Add point tool [+] then Ctrl drag.