The updated (control-option) nudge is a huuuuuge improvement. Thanks Georg and all for your continual improvement of Glyphs!
Whats this function about? Can’t reproduce it, even I checked the manual?
Nudging is described in section 3.3.2 Moving Selected Nodes and Paths in the Glyphs 2.3 Handbook. Also on the Get Started page, the Drawing Paths video at about time marker 1:53 mentions using Control-Option while dragging to nudge to proportionally adjust the surrounding handles while moving the selected node or segment.