chage -l <username> from the root CLI of an NSX Manager node shows the password as expiring or already expired.
The password for this user is getting reset by the CORFU quorum between the NSX manager nodes. This can occur if the username is one that was added as a local account and is not a default NSX user or if the password that is being changed is for the root user.
Follow the instructions presented in NSX documentation Resetting the Passwords of an Appliance.