diff --git a/src/Tracy/Dumper/Renderer.php b/src/Tracy/Dumper/Renderer.php
index a32e5a7ce..60bddbc6c 100644
--- a/src/Tracy/Dumper/Renderer.php
+++ b/src/Tracy/Dumper/Renderer.php
@@ -47,6 +47,9 @@ final class Renderer
 	/** @var Value[]|null */
 	private $snapshotSelection;
 
+	/** @var array */
+	private $snapshotParents = [];
+
 	/** @var array */
 	private $parents = [];
 
@@ -442,10 +445,10 @@ private function copySnapshot($value): void
 				return;
 			}
 			$ref = $this->snapshotSelection[$value->value] = $this->snapshot[$value->value];
-			if (!isset($this->parents[$value->value])) {
-				$this->parents[$value->value] = true;
+			if (!isset($this->snapshotParents[$value->value])) {
+				$this->snapshotParents[$value->value] = true;
 				$this->copySnapshot($ref);
-				unset($this->parents[$value->value]);
+				unset($this->snapshotParents[$value->value]);
 			}
 		} elseif ($value instanceof Value && $value->items) {
 			foreach ($value->items as [, $v]) {