The behavior you're experiencing occurs because the "When a new email arrives" trigger in Power Automate by default only works for the Inbox folder unless explicitly configured for other folders. Emails moved to subfolders by rules may not trigger the flow unless explicitly set up to monitor those folders.

To address this issue, you can modify your flow or use an alternative trigger. Here's how you can make your flow work for emails in specific folders:

• Modify the Flow Trigger by replacing the "When a new email arrives" trigger with the trigger: "When a new email arrives in a shared mailbox (V2)" or "When a new email arrives in a folder".