ec.multiobjective.MultiObjectiveFitness has a method getSortedParetoFront(inds) which "Returns the Pareto Front of the provided Individuals, sorted by objective 0, breaking ties with objective 1, and so on...". My stats output however is giving me the following example:

Subpop 0 front: [1.7809114456176758 2.0] [1.7809114456176758 2.0] [0.7325587272644043 351.0] [0.7325587272644043 351.0] [1.6044001579284668 4.0] [1.6044001579284668 4.0] [1.4893463850021362 5.0] [1.3715533018112183 7.0] [1.2939209938049316 8.0] [1.4893463850021362 5.0] [1.4187469482421875 6.0] [1.2939209938049316 8.0] [1.2364723682403564 9.0] [1.2364723682403564 9.0] [1.1888344287872314 10.0] [1.4187469482421875 6.0] [1.3715533018112183 7.0] [1.1888344287872314 10.0] [1.1423251628875732 11.0] [1.1423251628875732 11.0] [1.102521300315857 12.0] [1.0965145826339722 13.0] [1.0592397451400757 14.0] [0.9846906065940857 18.0] [1.0151090621948242 17.0] [0.9283546209335327 22.0] [0.9567434787750244 21.0] [0.9840019941329956 19.0] [0.9656238555908203 20.0] [1.0592397451400757 14.0] [1.0422323942184448 15.0] [1.0422323942184448 15.0] [1.0258989334106445 16.0] [0.921392023563385 26.0] [0.9064592123031616 27.0] [1.0258989334106445 16.0] [1.0151090621948242 17.0] [0.8879514932632446 37.0] [0.8969906568527222 36.0] [0.9656238555908203 20.0] [0.9567434787750244 21.0] [0.798882782459259 159.0] [0.8798811435699463 39.0] [0.8712236285209656 42.0] [0.8870922923088074 38.0] [0.792111873626709 162.0] [0.8798811435699463 39.0] [0.7860276103019714 178.0] [0.749239444732666 258.0] [0.7664241194725037 236.0]... etc.

Objective 0 is clearly not sorted in ascending (or descending order) -- any ideas?