diff --git a/packages/core/src/diff.rs b/packages/core/src/diff.rs
index 270c81730..2a6425eaf 100644
--- a/packages/core/src/diff.rs
+++ b/packages/core/src/diff.rs
@@ -126,7 +126,13 @@ impl<'b> VirtualDom {
             });
 
         // Make sure the roots get transferred over while we're here
-        *right_template.root_ids.borrow_mut() = left_template.root_ids.borrow().clone();
+        {
+            let mut right = right_template.root_ids.borrow_mut();
+            right.clear();
+            for &element in left_template.root_ids.borrow().iter() {
+                right.push(element);
+            }
+        }
 
         let root_ids = right_template.root_ids.borrow();
 
diff --git a/packages/core/tests/fuzzing.rs b/packages/core/tests/fuzzing.rs
index 40bb5dcbf..1523c4e22 100644
--- a/packages/core/tests/fuzzing.rs
+++ b/packages/core/tests/fuzzing.rs
@@ -179,7 +179,7 @@ fn create_random_dynamic_node(cx: &ScopeState, depth: usize) -> DynamicNode {
                 node_paths: &[&[0]],
                 attr_paths: &[],
             }),
-            root_ids: Default::default(),
+            root_ids: bumpalo::collections::Vec::new_in(cx.bump()).into(),
             dynamic_nodes: cx.bump().alloc([cx.component(
                 create_random_element,
                 DepthProps { depth, root: false },
@@ -276,7 +276,7 @@ fn create_random_element(cx: Scope<DepthProps>) -> Element {
                 key: None,
                 parent: None,
                 template: Cell::new(template),
-                root_ids: Default::default(),
+                root_ids: bumpalo::collections::Vec::new_in(cx.bump()).into(),
                 dynamic_nodes: {
                     let dynamic_nodes: Vec<_> = dynamic_node_types
                         .iter()