After a year and a half, I still consider the breviary to be in beta because of issues like this morning—a missing collect and, in some cases, missing lessons. They’re fixed now and part of today’s events include a check through the rest of Holy Week to make sure everything’s functioning properly.
Exactly how the Holy Week and Triduum Offices are to be celebrated is a favorite topic among Anglican armchair liturgists; the various Books of Common Prayer give no indication of changes during this time but catholic practices give a variety of options with the Roman variations being predominate but I’m sure we can find some divergences even from that among regional uses (like the 24 candles of the Sarum tenebrae hearse as opposed to the more pedestrian 15 of Roman practice). I did write a bit about this last year which covers some of the various points to weigh.
Bottom line at the breviary is this: the breviary keeps the gloria patris for the beginning of Holy Week, but gives reduced offices for Triduum. The BSG version, however, does not use reduced offices but presents a full, regular, prayer book office. This probably is something that I should build into the preferences but haven’t had the time to do.