Hi, The blue coloured bottom trace seems to have disappeared from my PCB board design. The trace is there but I can't see it. The top red trace can be seen OK. The trace is on the gerber file and I have had the boards made and all is OK. I can't do any alterations to the bottom trace routing because I can't see the trace. I don't have a ground plane. Any ideas why it doesn't show? Thanks, Richard.
Chrome
83.0.4103.116
OS X
10_15_5
EasyEDA
6.4.0