fix(core): check if prevClosestHandle exists in pointer up

Signed-off-by: braks <78412429+bcakmakoglu@users.noreply.github.com>

packages/core/src/components/ConnectionLine/ConnectionLine.vue

@@ -95,7 +95,7 @@ export default {
       v-if="connectionLineComponent"
       :source-x="sourceX"
       :source-y="sourceY"
-      :source-position="sourceHandle?.position"
+      :source-position="fromPosition"
       :targetX="targetX"
       :targetY="targetY"
       :target-position="targetPosition"

packages/core/src/composables/useHandle.ts

@@ -176,9 +176,11 @@ export default function useHandle({
       }
 
       function onPointerUp(event: MouseEvent | TouchEvent) {
-        if (connection && isValid) {
-          if (!onEdgeUpdate) emits.connect({ ...(defaultEdgeOptions?.value || {}), ...connection })
-          else onEdgeUpdate(connection)
+        if (prevClosestHandle) {
+          if (connection && isValid) {
+            if (!onEdgeUpdate) emits.connect({ ...(defaultEdgeOptions?.value || {}), ...connection })
+            else onEdgeUpdate(connection)
+          }
         }
 
         emits.connectEnd(event)