I think this is the cause of https://discourse.julialang.org/t/unsupported-constraint-only-in-infeasibility-analysis/135721/4 But I need to construct a reproducible example to confirm. https://github.com/jump-dev/MathOptIIS.jl/blob/8b17520300b783791737a0487172c22f88c97cb9/src/solver.jl#L28