**BUG**
When exporting multiple layers (Top, Bottom, Top Silk, Bottom Silk) along with Assembly Drawing all traces on copper layers (Top and Bottom in this case) are missing and only the paste/solder copper areas are visible. Assembly drawing is not created and exported. This happens when using desktop and web versions of EasyEDA Editor. It happens when exporting image or pdf and full color or black on white background. Tested with a couple of different projects (PCBs), so I assume it is not related to my particular design.
Steps to reproduce bug:
1. Open a completed PCB design
2. Try to export like mentioned above
3. Open files to find out traces missing and assembly drawing not existing at all
Results: Useless copper layer drawings (no traces)
Expected results: Same as when exporting without assembly drawing (which in this case is not exported at all)