Merge branch 'master' into trails-aubrey

1 files changed, 15 insertions, 0 deletions

diff --git a/src/client/util/DragManager.ts b/src/client/util/DragManager.ts
index 421e4c6bb..f5704d2bf 100644
--- a/src/client/util/DragManager.ts
+++ b/src/client/util/DragManager.ts
@@ -365,6 +365,21 @@ export namespace DragManager {
         const dragElements = eles.map(ele => {
             if (!ele.parentNode) dragDiv.appendChild(ele);
             const dragElement = ele.parentNode === dragDiv ? ele : ele.cloneNode(true) as HTMLElement;
+            const children = Array.from(dragElement.children);
+            while (children.length) { // need to replace all the maker node reference ids with new unique ids. otherwise, the clone nodes will reference the original nodes which are all hidden during the drag
+                const next = children.pop();
+                next && children.push(...Array.from(next.children));
+                if (next) {
+                    ["marker-start", "marker-mid", "marker-end"].forEach(field => {
+                        if (next.localName.startsWith("path") && (next.attributes as any)[field]) {
+                            next.setAttribute(field, (next.attributes as any)[field].value.replace("#", "#X"));
+                        }
+                    });
+                    if (next.localName.startsWith("marker")) {
+                        next.id = "X" + next.id;
+                    }
+                }
+            }
             const rect = ele.getBoundingClientRect();
             const scaleX = rect.width / ele.offsetWidth;
             const scaleY = ele.offsetHeight ? rect.height / ele.offsetHeight : scaleX;