After the recent updates of the program, there was a problem with the phone Samsung Galaxy S3 Mini. If I'm enable or disable the checkbox "Allow display hidden contacts" in the settings of Whatsapp, it clears the list of allowed contacts in the 'lock mode' of smartphone. Also, it happens randomly, without enable or disable the checkbox.
Can you fix this problem?
ThanX! Sergey. Russia. Vladivostok.