**BUG** Concise problem statement: PCB editor stops working after updating from freshly edited schematic Steps to reproduce bug: 1.Create a project with a schematic and a PCB for it 2.Add a component in the schematic and wire it up and then update the PCB. Results: I can see the new components being added, but no ratlines. Also, components that have been deleted in the schematic, won't be deleted in the PCB editor. Expected results: Components added, along with ratlines. While manually trying to route tracks, it should show the white "help line". Browser: Google Chrome Version 64.0.3282.167 (Official Build) (64-bit) Also, I tried to place all the components in the board area and click the autorouter button. Unfortunately it also crashes with the progress bar stuck at 0%