diff --git a/package.json b/package.json
index a6d3c79..583e72d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@digicomp/now-and-later",
-  "version": "1.0.2",
+  "version": "1.0.3",
   "description": "an easy API for DOM MutationObserver",
   "main": "src/nowAndLater.js",
   "scripts": {
diff --git a/src/nowAndLater.js b/src/nowAndLater.js
index 31909a8..9383b46 100644
--- a/src/nowAndLater.js
+++ b/src/nowAndLater.js
@@ -16,7 +16,11 @@ export default function nowAndLater(selector, callback)
     const nodes = document.querySelectorAll(selector);
     const id = Date.now() + '_' + lateInits.length;
     const wrappedCallback = (node) => {
-        node.dataset['nowAndLater' + id] = '';
+        if (node.dataset.nowAndLater === undefined) {
+            node.dataset.nowAndLater = id;
+        } else {
+            node.dataset.nowAndLater += ',' + id;
+        }
         callback(node, selector);
     };
     if (nodes.length > 0) {
@@ -35,11 +39,15 @@ const observer = new MutationObserver(function (mutationsList)
                 if (addedNode['querySelector'] === undefined) { // lets filter out text and comment nodes
                     continue;
                 }
-                const selector = lateInit.selector + ':not([data-now-and-later' + lateInit.id + '])';
+                const selector = lateInit.selector + `:not([data-now-and-later~="${lateInit.id}"])`;
                 // If the added node matches itself, it will not be found by querySelectorAll, so we have to check first
                 if (addedNode.matches(selector)) {
                     lateInit.callback(addedNode);
                 }
+                const childNodes = addedNode.querySelectorAll(selector);
+                [...childNodes].forEach(node => {
+                    lateInit.callback(node);
+                });
             }
         }
     }