When sorting by title in the OPAC/staff interface multiple parts/volumes don't sort correctly or are sorted nonsensically. I am not sure if it's possible to sort on multiple subfields, but it seems like only $a is included. $p and $n are currently not included in a Title:s index - but have to investigate more to see if that woudl fix the problem. Help appreciated.
I do not view this request as an enhancement--I view this as an error in the software requiring correction. Perhaps the customizable abilities of ElasticSearch corrects this?