I did some digging, and commenting out lines 96 to 99 and lines 127 to 130 in RobotRenderer.scala solves the issue completely. No other graphical artifacts happens with these lines commented out.
Not quite sure exactly what these lines accomplishes w.r.t. rendering or if they are doing anything important.
When holding or viewing a robot placed in the world, the entire world becomes transparent, and a few other graphical glitches.
Forge 10.13.4.1614
Only using OpenComputers-MC1.7.10-1.8.3 089dd28-universal
No other mods.
Logs: https://mclo.gs/U0iSU1j