Hi, by investigating a recent issue (MATH-930), I discovered that the newly introduced LinearConstraintSet stores the constraints internally in a HashSet. This leads to undeterministic behavior as the iteration order of constraints is not fixed (especially between different JRE versions).
TBH, I never reviewed this change and I am a bit surprised to see it. Imho there is no need to have a Set here, and would prefer to change this to a list implementation. Thomas
