Opened Editor is not proper

If i open editor on label it properly opened over the label.

But when i open editor on node it cannot be opened over the node.

When i open the editor in node it should open over the node and cover it completely as label does.

It appears that the TextBlock being edited does not occupy the area of the whole Node, which is why the text editor does not cover the whole node.

You’ll need to customize the text editor to do what you want. Please read: