don't bother with active element preservation if the active element is <body>.

botandrose-machine · botandrose-machine · commit 31ace40b6a0e · 2025-07-20T13:25:14.000Z
diff --git a/src/idiomorph.js b/src/idiomorph.js
@@ -1047,9 +1047,12 @@ var Idiomorph = (function () {
       /** @type {Element[]} */
       let activeElementAndParents = [];
       let elt = document.activeElement;
-      while (elt && elt !== oldNode) {
-        activeElementAndParents.push(elt);
-        elt = elt.parentElement;
+      if (elt?.tagName !== "BODY" && oldNode.contains(elt)) {
+        while (elt) {
+          activeElementAndParents.push(elt);
+          if (elt === oldNode) break;
+          elt = elt.parentElement;
+        }
       }
       return activeElementAndParents;
     }
