URGENT!! Can't submit a bug because drop down list in field 'device' is empty and attachement is mandatory although we switched off

After submitting a bug I first need to save the whole testcase en press 'edit' again to log a second bug because if I try to log more than 1 bugs in once the dropdown list of the field 'device' is empty, so I can't submit. Our whole testing team is encoutering this problem. 

Besides this, the attachement field stays mandatory although we switched it off. We can;t submit a bug without adding an attachement.