Hi,
I think there is a bug in Directory Opus 13's file sorting according to the Date column.
When I select the modified date column for sorting, the files are sorted first on day, then on month, and finally on year. Normally they should be sorted on year / month / date order.
edit: I noticed that, the sorting works correctly when the date column = "Modified (date and time)". The above behaviour occurs when the date column = "Modified (simple)". Not sure whether this was the intended behaviour.