I believe the option to save a private key as OpenSSH actually saves it in PKCS#1 / OpenSSL format.
- Please rename that option to "PKCS #1 / OpenSSL (*.key)"
- Change the file extends to something else, like *.key
- Optional: add option to store in actual "OpenSSH" format
I described my findings here: https://stackoverflow.com/questions/59469531/how-to-quickly-identify-ssh-private-key-file-formats
Thanks for reporting this, it has been submitted to the engineering department.
Their ticket number is : RDMW-4280