Developers Warned to Test SFTP Uploads After SSH Reconnects When Switching to macOS

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A developer building DartShell on macOS discovered that a successful SSH reconnection does not guarantee SFTP file transfers will resume correctly. After a dropped session, the terminal reconnected and remote directory browsing worked, but drag-and-drop uploads sometimes failed to start or showed stale transfer status. The issue emerged while evaluating macOS alternatives to Bitvise SSH Client, a Windows tool that combines SSH terminal access with graphical file management. To expose reconnect-related failures, the developer established a test sequence: connect, upload a file, disconnect, reconnect, then drag a second file and verify the upload starts and progress refreshes. The key finding is that a successful first transfer only confirms the initial SFTP session works, not behavior after reconnection.

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