Skip streaming params on load

apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/components/copilot-message/components/smooth-streaming.tsx

@@ -93,10 +93,14 @@ function calculateAdaptiveDelay(displayedLength: number, totalLength: number): n
  */
 export const SmoothStreamingText = memo(
   ({ content, isStreaming }: SmoothStreamingTextProps) => {
-    const [displayedContent, setDisplayedContent] = useState('')
+    // Initialize with full content when not streaming to avoid flash on page load
+    const [displayedContent, setDisplayedContent] = useState(() =>
+      isStreaming ? '' : content
+    )
     const contentRef = useRef(content)
     const rafRef = useRef<number | null>(null)
-    const indexRef = useRef(0)
+    // Initialize index based on streaming state
+    const indexRef = useRef(isStreaming ? 0 : content.length)
     const lastFrameTimeRef = useRef<number>(0)
     const isAnimatingRef = useRef(false)
 

apps/sim/app/workspace/[workspaceId]/w/[workflowId]/components/panel/components/copilot/components/copilot-message/components/thinking-block.tsx

@@ -46,12 +46,16 @@ interface SmoothThinkingTextProps {
  */
 const SmoothThinkingText = memo(
   ({ content, isStreaming }: SmoothThinkingTextProps) => {
-    const [displayedContent, setDisplayedContent] = useState('')
+    // Initialize with full content when not streaming to avoid flash on page load
+    const [displayedContent, setDisplayedContent] = useState(() =>
+      isStreaming ? '' : content
+    )
     const [showGradient, setShowGradient] = useState(false)
     const contentRef = useRef(content)
     const textRef = useRef<HTMLDivElement>(null)
     const rafRef = useRef<number | null>(null)
-    const indexRef = useRef(0)
+    // Initialize index based on streaming state
+    const indexRef = useRef(isStreaming ? 0 : content.length)
     const lastFrameTimeRef = useRef<number>(0)
     const isAnimatingRef = useRef(false)
 

apps/sim/stores/panel/copilot/store.ts

@@ -422,7 +422,8 @@ function abortAllInProgressTools(set: any, get: () => CopilotStore) {
  * Loads messages from DB for UI rendering.
  * Messages are stored exactly as they render, so we just need to:
  * 1. Register client tool instances for any tool calls
- * 2. Return the messages as-is
+ * 2. Clear any streaming flags (messages loaded from DB are never actively streaming)
+ * 3. Return the messages
  */
 function normalizeMessagesForUI(messages: CopilotMessage[]): CopilotMessage[] {
   try {
@@ -438,23 +439,57 @@ function normalizeMessagesForUI(messages: CopilotMessage[]): CopilotMessage[] {
       }
     }
 
-    // Register client tool instances for all tool calls so they can be looked up
+    // Register client tool instances and clear streaming flags for all tool calls
     for (const message of messages) {
+      // Clear from contentBlocks (current format)
       if (message.contentBlocks) {
         for (const block of message.contentBlocks as any[]) {
           if (block?.type === 'tool_call' && block.toolCall) {
             registerToolCallInstances(block.toolCall)
+            clearStreamingFlags(block.toolCall)
           }
         }
       }
+      // Clear from toolCalls array (legacy format)
+      if (message.toolCalls) {
+        for (const toolCall of message.toolCalls) {
+          registerToolCallInstances(toolCall)
+          clearStreamingFlags(toolCall)
+        }
+      }
     }
-    // Return messages as-is - they're already in the correct format for rendering
+    // Return messages - they're already in the correct format for rendering
     return messages
   } catch {
     return messages
   }
 }
 
+/**
+ * Recursively clears streaming flags from a tool call and its nested subagent tool calls.
+ * This ensures messages loaded from DB don't appear to be streaming.
+ */
+function clearStreamingFlags(toolCall: any): void {
+  if (!toolCall) return
+
+  // Always set subAgentStreaming to false - messages loaded from DB are never streaming
+  toolCall.subAgentStreaming = false
+
+  // Clear nested subagent tool calls
+  if (Array.isArray(toolCall.subAgentBlocks)) {
+    for (const block of toolCall.subAgentBlocks) {
+      if (block?.type === 'subagent_tool_call' && block.toolCall) {
+        clearStreamingFlags(block.toolCall)
+      }
+    }
+  }
+  if (Array.isArray(toolCall.subAgentToolCalls)) {
+    for (const subTc of toolCall.subAgentToolCalls) {
+      clearStreamingFlags(subTc)
+    }
+  }
+}
+
 /**
  * Recursively registers client tool instances for a tool call and its nested subagent tool calls.
  */