Inserting node by double clicking does not work. It might work after around twenty times. Why can't you use the "insert" and "delete" keys? This is a real pain. Also would like to be able to continue trace by double clicking (or something) and continuing the track. Right now I have two choices, move the end node to the destination, and then double click twenty times to add nodes, or, delete the whole trace and start over. Very time consuming!!!
Bob
Brand new interactions and interfaces. 
Easy to use and quick to get started. 
I am editing a project in easyeda. A red track is displayed. I move the mouse over the track, but do not click. The track turns grey, but the green circles nodes are not displayed. I double left
click. A green circle node is inserted, and the other green circle nodes are now displayed.
A red track is displayed. I move the mouse over the track, and left click. The track turns grey, and the green circle nodes are displayed. I double left click. Nothing happens. A green circle node is NOT inserted.
So I find that double left click to insert a node always works if the green circle nodes are NOT displayed, and never works if the green circle nodes ARE displayed.