Sort date of FRBR groups in date-sorted results lists
When sorting a brief results list by date, obviously always the sort date of the earliest member of a FRBR group is taken to represent the whole group. We would expect that in sort order "year (ascending)" the publication date of the earliest member record is taken, and in sort order "year (descending)" the publication date of the latest member.
m schwendener commented
Wouldn't it be more logical if 'Sort by year' un-grouped the FRBR group and just sorted the single works by year?