Coffee touching the filter basket, impression after pulling shot

I noticed an impression on the tamped coffee in the portafilter after pulling shots - see photo. I don’t understand because the measuring tool that came with the Breville Barista Pro shows the tamp is low enough the portafilter, both pre and post pulling the shot.

Is this pattern from touching the filter? Is that bad? Or could the pattern be from the water extruding hole and not from touching?

Hi @gerrypez It is definitely touching the basket, just remove few grams from the filter or get the bigger one.