diff --git a/frontend/src/lib/components/copilot/chat/flow/FlowAIChat.svelte b/frontend/src/lib/components/copilot/chat/flow/FlowAIChat.svelte
index 52b046f7a4..0dd3bfa20b 100644
--- a/frontend/src/lib/components/copilot/chat/flow/FlowAIChat.svelte
+++ b/frontend/src/lib/components/copilot/chat/flow/FlowAIChat.svelte
@@ -88,7 +88,7 @@
 		},
 		// flow apply/reject
 		getPreviewFlow: () => {
-			return previewFlow
+			return $state.snapshot(previewFlow)
 		},
 		hasDiff: () => {
 			return Object.keys(affectedModules).length > 0