Fix constraint editing and glyph feedback

src/scene/view/render.rs

@@ -4254,15 +4254,20 @@ impl Scene {
             Arc::new(Vec::new())
         };
         let preview_wires = if !show_live_overlay
-            || (self.interim_wire.is_none() && self.preview_wires.is_empty())
+            || (self.interim_wire.is_none()
+                && self.preview_wires.is_empty()
+                && self.constraint_hover_wires.is_empty())
         {
             Arc::new(Vec::new())
         } else {
-            let mut v: Vec<WireModel> = Vec::with_capacity(self.preview_wires.len() + 1);
+            let mut v: Vec<WireModel> = Vec::with_capacity(
+                self.preview_wires.len() + self.constraint_hover_wires.len() + 1,
+            );
             if let Some(iw) = &self.interim_wire {
                 v.push(iw.clone());
             }
             v.extend(self.preview_wires.iter().cloned());
+            v.extend(self.constraint_hover_wires.iter().cloned());
             Arc::new(v)
         };
         let preview_hatches = if show_live_overlay {