Steps to reproduce:

1. Create a new graph widget
2. Add host-1, host-2, host-3, host-4, host-5 (or host-*) etc to the data set and use a common item - e.g. Outgoing network traffic on eth0

Result:
See Screenshot for unexpected result - the items are sorted alphabetically, but the hosts are not. 

Note that using hard naming (host-1, host-2, host-3 etc) also leads to incorrect sorting, in the same way that wildcard host-* does. 

Expected:
See screenshot for expected result - example is a single host with multiple items. They are all sorted alphabetically. 

I assume the issue is item sorting priority is higher than that of the hosts. 

Best regards