Odd login issue

Hi all I strange one here i boot to a text prompt then login but When i enter my username hit enter it sites there not asking for password then the login prompt will return this time enter my username hit enter it then goes correctly to password and logs in perfectly Now i do not think this is related but one of the cats knocked a cup of tea into a keyboard scrapped it totally alarmingly fast a Logitec K270 wireless thing so went and purchased a replacement exactly the same make and model changed it over new usb receiver mouse keyboard . It is strange that i only nmoticed it after that Cheers Pete