Fix replace content

src/helpers/dom.ts

@@ -682,12 +682,15 @@ export function htmlToSpan(html: string) {
 
 export function replaceContent(elem: HTMLElement, node: string | Node) {
   // * children.length doesn't count text nodes
-  if(elem.children.length) {
-    elem.firstChild.replaceWith(node);
-  } else if(!elem.firstChild) {
-    elem.append(node);
+  const firstChild = elem.firstChild;
+  if(firstChild) {
+    if(elem.lastChild === firstChild) {
+      firstChild.replaceWith(node);
+    } else {
+      elem.textContent = '';
+      elem.append(node);
+    }
   } else {
-    elem.textContent = '';
     elem.append(node);
   }
 }