diff --git a/Frontend/src/lib/components/EvolutionTree.svelte b/Frontend/src/lib/components/EvolutionTree.svelte
index 9007c9b..c1d7b2f 100644
--- a/Frontend/src/lib/components/EvolutionTree.svelte
+++ b/Frontend/src/lib/components/EvolutionTree.svelte
@@ -44,7 +44,13 @@
 	let activeBranch = $state<Branch>('ponte');
 
 	let branchConfig = $derived(BRANCH_CONFIG[activeBranch]);
-	let branchNodes = $derived(game.state.evolutionTree.filter((n) => n.branch === activeBranch));
+	let branchNodes = $derived(game.state.evolutionTree.filter((n: any) => n.branch === activeBranch));
+
+	// Debug — remove after fix confirmed
+	$effect(() => {
+		const tree = game.state.evolutionTree;
+		console.log('[EvolutionTree] tree length:', tree.length, 'activeBranch:', activeBranch, 'filtered:', tree.filter((n: any) => n.branch === activeBranch).length, 'first node:', tree[0] ? { id: tree[0].id, branch: tree[0].branch } : 'empty');
+	});
 	let spentDna = $derived(getSpentDna(game.state.evolutionTree));
 	let hasUnlocked = $derived(spentDna > 0);
 	let resetCost = $derived(getTreeResetCost(game.state));