Small visual glitch (Nautilus+Sushi)

Very minor but something that I’ve noticed since G42 dropped.
After invoking Sushi for a file preview (press space) the current Nautilus window then adds a thin white border around any selected file names. (in list view) New windows don’t exhibit this until you invoke sushi again.

pic1

What custom theme are you using? Can you reproduce it with Adwaita-dark or Adw-dark?

Yes it happens with the standard Adw-dark theme. (& also boot from live USB)

I am using adw-gtk3-dark & since it now supports named colours in the last update, I changed the highlight to green.