Steps to reproduce:

1. Create graph with items from at least two hosts
2. Disable or break item shown on graph from the second host
3. Try to edit graphs from the first host
4. Blank screen is shown instead of list of graphs from the first host

Result:
See screenshots:

• Blank screen when trying to see list of graphs from the first host
• Expected view when looking for list of graphs from the second host
• Items on the graph with one unsupported item from the second host
• Not supported item from the second host

See attached log file to see php errors generated.

Expected:

List of graphs can be seen from both hosts