I am running Inkscape 0.92 on Windows 10.
I have clipped a portion out of a picture and "Show clipping path(s) of selected object(s)" is also enabled as per this similar question. However I do not see any nodes to edit the clip path. Below is my screenshot. As can be seen, no nodes are visible to edit the clip path. Am I hitting some bug? I saw the same behaviour on my Ubuntu 18 machine running same version of Inkscape.