[REG] Connections disappear from Connections view after saving the project

Steps to reproduce:

• Create general empty project
• Open Connection View -> Connections
• -> View is empty even though there is existing connection: 
  •         Connections {             target: button             onClicked: animation.start()         }
• Add new button component to 2D view
• Right click the button in 2D view and select "Connections - Add Signal Handler - Clicked - Change State to clicked
• -> Added connection is now visible in Connections view
• Save the project
• -> Connection disappears from Connections view