A cellular process phenotype in which meiotic chromosome segregation is abnormal. Meiotic chromosome segregation is the entire process in which genetic material, in the form of chromosomes, is organized into specific structures and then physically separated and apportioned to two or more sets during M phase of the meiotic cell cycle. [ https://www.pombase.org/gene/mah http://amigo.geneontology.org/amigo/term/GO:0045132 ]