Zabbix version 1.7

I create new screen. Then I click "change" link and then click save button without graph selection. Zabbix says than item add, but screen dissapear from screens.

Problem in screen_accessible() function, when i add empty graph zabbix save it with resourceid = 0,
when screen_accessible check screen it return false in this line " $result &= isset($graphids[$ac_data['resourceid']]); " resourceid = 0 does not exists;

/in Russian/
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