Lego Mindstorms Ev3 home edition on Mac OS Mojave bug - bricks sometimes go blank
I contacted Lego support and they got back to me with a fix, which worked great.  It also has greatly improved the performance of the application.


  For this issue fix, please install Mono for Mac OS found at the link below:
  
  https://www.mono-project.com/download/stable/
  
  and choose Mono 5.10.1