Parameters processing can be unstable depending of the parameters name that the user choose. Now, if we have two different parameters algorithm and algorithmDefault any of them can be randomly choose to be assigned to obj.method. The issue comes from Experiment.m:

elseif strncmpi('algorithm',nueva_linea, 3),

Causes to compare only using the first lines. A quick fix can be to use length(), so that:

elseif strncmpi('algorithm',nueva_linea, length('algorithm')),