Not able to change Graphs widget names

Hello, 

I've upgrade our Observium to last stable version - Observium 19.2.9712 (stable)

First - there is no minigraphs anymore. 

There is Graphs widget instead but there is no option to change / rename graph name!

It is showing by default with Device name + Device port but there is no option to change it with custom name. 

If i Click on EDIT mode - there is empty window. 

Please check attached screenshots and let me know if the issue is with Observium version or there is something wrong in my configuration.