Date / Time not parsing correctly

Using Advanced Customs Fields with the Date and Time add on will trip up Admin Columns when using the Date/Time field.

Dates before / around September 8th, 2001 are saved as 9 numbers * 1000 resulting in 12 numbers to store the time. Dates after September 8th are saved as 10 numbers * 1000, resulting in 13 numbers.

In version 2.3.5 of Admin Columns:
Lines 898 – 901 in column.php

if ( is_numeric( $date ) && 13 === strlen( trim( $date ) ) ) {
$date = substr( $date, 0, -3 );
}

These lines fail to take in to account dates before September 8th 2001 as they are only 12 characters long but still saved as milliseconds (* 1000). This results in Admin Columns not being able to parse the unix time as it will try to parse the 12 character string and not remove the milliseconds.

https://wordpress.org/plugins/codepress-admin-columns/