expiration date in dashboard is 02.01.1970

Description

In dashboard -> Users, expiration date of expired accounts are the same value : 02.01.1970 but expiration date in accounts are ok (Users -> Accountname -> Unix -> password expiration date)

Distribution Name and Version

Centos7

FusionDirectory Version

1.3.0

PHP version used

7.1

Origin of php packages

fusion directory

Steps to Reproduce

1. put an expiration date in Users -> Accountname -> Unix -> password expiration date
2. go to dashboard -> Users
3. expiration date are 02.01.1970

Expected behavior: good expiration date

Actual behavior: 02.01.1970

Reproduces how often: 100%

Additional Information

no problem with fusiondirectory 1.2.3 dashboard display good expired accounts