Custom logbook card : how avoid first entry

Hi,

I used the custom logbook card to display the rinses of my drum filter :

As you can see the last rinse was at 11:44

But the overview gives also the actual value (11:55).

Can I avoid this line to be displayed ?

  - type: custom:logbook-card
    title: Overview rinses
    entity: input_datetime.tijdstip_duur_spoelingen_trommelfilter
    history: 1
    max_items: 100
    show:
      state: false
      duration: true
      end_date: true
      start_date: false
      icon: true
      separator: false
    date_format: DD/MM/YYYY hh:mm
    collapse: 5

Meanwhile also another problem : why is the duration rounded to 1 hour ?

Schermafbeelding 2022-06-04 065017