Steps to reproduce:
- Drag an drop the Basic Shapes-> Text item to the editor
--------------------------------------------
import javafx.scene.text.Text;
import javafx.scene.text.Font;

Text {
        font : Font {
                size: 24
        }
        x: 10, y: 30
        content: "HelloWorld"
}
--------------------------------------------

1. There is a space between font property and the colon
        font : Font {

2. There are two tabs before attributes instead of one:

Text {
        font : Font {
                size: 24
        }
        x: 10, y: 30
        content: "HelloWorld"
}

Should be:
   
Text {
    font: Font {
        size: 24
    }
    x: 10, y: 30
    content: "HelloWorld"
}



The same is for other palette items