RDM closure when i Use this key sequence "|f"

I frequently connect to computers using RDP and, on these computers, when I use this sequence: "|f" in powershell (ex get-aduser -properties |fl *) RDM closes unexpectedly. If i Use "| f" it's OK
Is this a bug or a shortcut to close the program? If so, how do you modify this shortcut, as this sequence is often used with powershell

thank you

Best regards

Richard