Steps to reproduce:

1. Select 1 host and unselect "show items without data". Submit form.
2. See correct results.
3. Delete selected host or make it unavailable trough permissions.
4. Go back to Latest data.

Result:

1. Filter hosts field is empty but "show items without data" is active and unselected. It should always be disabled if no host is specified.
2. Results are not returned although there should be results from all hosts since filter form is empty.