Thank you so much! That was it; I was not familiar with Spiro curves and I must have accidentally selected the mode. I appreciate your insight.
Best regards,

ilya

Dear Inkscape Users - I have generated a drawing in Inkscape but when I try to adjust path curvature by draging handles of nodes, the paths don't change: the handles rotate and extend but its not reflected by change in line shape. If I do move the node, however, it does behave properly and shifts th...