I was creating a circuit in the schematic editor, had about 8 or 9 components connected and simulator running. I edited something, can't remember what but I think I was trying to move connectors (that is sooo hard btw, and the UI is too slow). Suddenly the editor is blank - however, but components are still listed in objects. If I revert to earlier versions it still isn't visible. If I open in a different browser it isn't visible. If I add new components the first will vanish, and the second will cause the page to crash completely.