"Turrets and Drones" for ground in the skill tree for engineers needs to be updated to say you can train boffs in support drone II after putting 6 ranks into the skill.
Edit: "Modification Specialist" ground skill for engineers needs to be updated to say you can train in Equipment Diagnostics III.
But to be honest the skill tree should say you unlock R&D trainings manuals to craft or something to that effect since you don't "train" boffs anymore. Also the skill tree info for unlocking boff skills you can train in needs to have the info updated for all 3 careers. Boff skills we would unlock for the old captain training that only had rank 1 or 2 now has rank 2 or 3.