We just released an update that fixes issues related to automatic saving on the Clients screen. Some symptoms were customizations that “didn’t stick” and “no matches” being shown for populated Segments.
Column visibility, column order, and column sort order are saved individually for each Segment. The active Segment, or any unsaved filters you have applied, are also remembered automatically so that things are exactly where you left them. You can also now create multiple Segments with the same criteria—allowing you to quickly view datasets in different arrangements of fields and sort orders with a single click.