When playing from USB in Rekordbox, tracks aren't marked dark green when played

Hi,

Having a bit of trouble trying to understand why my tracks aren't marked dark green after they've been played (for longer than a minute) when playing tunes from my USB stick. They are marked when playing from rekordbox collection, but not from the USB device. Any tips on how i can fix this because i only ever play from my USB.

Totally updated to latest version and got my software when buying pioneer controller.

Any help is appreciated. Thanks.