Hey there!
I believe that certain aspects of the research tree broke; probably due to updates on the base game and mods included.
"Robotics" requires "Advanced Oil Processing" as well as "Electric Engine" to be researched.
Both require blue science (and below).
"Robotics", "Logistic robotics" and "Construction Robotics" only requires red science (and below).
Additionally "Robotics 2" and related research only require blue science, allowing for players to skip forward to the enhanced robots.
Furthermore, this prevents players from researching other personal equipment such as "Exoskeleton 1".
Is this intentional or is this a bug?