I think it's still supposed to store it in the keyring, but it's happened once before (and I wouldn't be surprised if it happened again) that NM and the keyring weren't interracting with each other properly.
I think it's still supposed to store it in the keyring, but it's happened once before (and I wouldn't be surprised if it happened again) that NM and the keyring weren't interracting with each other properly.