Robocopy在PowerShell中报错时有时弹出新cmd窗口有时不弹出的原因咨询

我平时在Windows PowerShell里用Robocopy做文件复制，但碰到个奇怪的问题：当Robocopy报错时，有时候会突然弹出一个新的cmd.exe窗口显示错误，有时候却直接在当前的PowerShell窗口里输出错误信息。有没有大佬能解释下这是为啥呀？

举个例子，我执行了这条命令：

robocopy /e "M:\BackedUpInEHD-E" Z:/BackedUpInEHD-E

对应的错误输出如下：

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PS C:\Windows\System32\WindowsPowerShell\v1.0> robocopy /e "M:\BackedUpInEHD-E" Z:/BackedUpInEHD-E

-------------------------------------------------------------------------------
   ROBOCOPY     ::     Robust File Copy for Windows
-------------------------------------------------------------------------------

  Started : Wednesday, September 25, 2024 3:15:56 PM
2024/09/25 15:15:56 ERROR 3 (0x00000003) Getting File System Type of Source M:\BackedUpInEHD-E\
The system cannot find the path specified.

   Source = M:\BackedUpInEHD-E\
     Dest = Z:\Back...

备注：内容来源于stack exchange，提问作者Franck Dernoncourt