Fix HaloLink link path highlighting not updating on link re-route

CHANGELOG.md

@@ -60,6 +60,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/) and this p
 
 #### 🐛 Fixed
 - Fix `HaloLink` and visual authoring link path highlight being rendered on top on elements by placing it onto `overLinkGeometry` widget layer instead.
+- Fix `HaloLink` link path highlighting not updating on link re-route.
 - Fix element template state not being restored when ungrouping entities.
 - Fix missing element decorations after re-importing the same diagram.
 - Fix `DraggableHandle` to avoid using stale `onDragHandle` and `onEndDragHandle` prop values.

src/widgets/haloLink.tsx

@@ -206,6 +206,11 @@ class HaloLinkInner extends React.Component<HaloLinkInnerProps, State> {
                     this.updateActionContext();
                 }
             });
+            this.targetListener.listen(canvas.renderingState.events, 'changeRoutings', e => {
+                if (e.previous.get(link.id) !== e.source.getRouting(link.id)) {
+                    this.updateActionContext();
+                }
+            });
         }
     }