Steps to reproduce:
- Create two host H1 and H2
- For first host H1 create item I1 and graph G1 with this item
- For host H2 create item I2
- Create Graph (classic) widget and add G1 graph (or item for simple graph type)
- Select option "Dynamic item"
- On dashboard select second host H2
Not visible header. For other dynamic widgets (Plain text, Graph prototype) header is widget type
Widget header "Graph (classic)"