2 files changed, 7 insertions, 2 deletions
diff --git a/ui/DisplayElement.js b/ui/DisplayElement.js
index 8a2aa71..9498487 100644
--- a/ui/DisplayElement.js
+++ b/ui/DisplayElement.js
@@ -87,7 +87,12 @@ module.exports = class DisplayElement extends EventEmitter {
     }
 
     child.parent = this
-    this.children.splice(afterIndex, 0, child)
+
+    if (afterIndex === this.children.length) {
+      this.children.push(child)
+    } else {
+      this.children.splice(afterIndex, 0, child)
+    }
 
     if (fixLayout) {
       child.fixLayout()
diff --git a/ui/form/Form.js b/ui/form/Form.js
index 7a82b31..3c59cf5 100644
--- a/ui/form/Form.js
+++ b/ui/form/Form.js
@@ -19,7 +19,7 @@ module.exports = class Form extends FocusElement {
     this.inputs.push(input)
 
     if (asChild) {
-      this.addChild(input, opts)
+      this.addChild(input, this.children.length, opts)
     }
   }