How to display the **Properties** panel:
Go to the far right hand edge of the EasyEDA Editor window in the browser.
There's a vertical blue strip with a small white left-pointing arrowhead in a darker blue segment at the vertical mid point.
Hover the mouse over it. The cursor will change from an arrow to a little hand and a hint will appear that says 'Toggle right bar'.
Click anywhere on that strip to toggle the visibility of the **Properties** panel.
Note that the **Properties** panel autohides (closes) after each simulation run.
:)