iPhone XS Max / Display issue / Low or absent sensitivity over margins

Hello Guys,

Since one week i am happy owner of a 256GB Max. But today i started noticing something strange.

Overall the touch sensitivity combined with iOS 12 is just pure magic with only one exception.

When i start scrolling by moving my finger up and down and keeping it only over the margins of the screen ( it doesn't matter the left or the right one) i always notice some delay. Sometimes it's a delay sometimes it doesn't react at all. Safari , Appstore , Photos .. no matter the app , the delay (or inactivity) is always present. When i move my finger a bit towards the center of the screen , the problem is completely gone.

I have also Samsung Galaxy S7 and even if i just keep my tip of the finger on the margin of the screen , it always scrolls/reacts accordingly without any misses at all.

Do you experience the same "misses" as myself?

What could this be related to? Faulty display/digitizer, software issue?

Thank you,

Nicky

EDIT: The issue is mostly present on the left side of the screen