The issue has appeared for me as well. Running latest on everything. The only mods affecting the personal roboport are [Base Mod > Krastorio 2], and the only mods affecting the suit are [Schall Suit]. On the suit, the personal roboport is not listed as accepted equipment, and on the roboport, the suit is not listed as a place it can go.
Though they are not listed as affecting it, I am also running Space Exploration (and the required AAI Industry) and a host of things that shouldn't affect equipment like Remains & Pickup, Virtual Signal, Recipe Book, Rampant, Construction Drones, Alien Biomes, etc.
Where should I look in the code for possible culprits?
EDIT: Some equipment is working. I currently have jetpacks, K2 generators, and K2's modified nightvision in the suit right now. The roboport is the first one I noticed not working. On further inspection, it looks like the expected equipment that is missing is Roboport mk1, Roboport mk2, and Exoskeleton mk1 (but oddly, the higher ones work).