discrepancy between official device metric and LC stack size

[Nicolas Cueto]

I test my mobile stacks on a Nexus 5, and, in portrait orientation, many
bottom pixels are offscreen, even though for width and height I follow
exactly the numbers given in dp at the website Device Metrics
<https://material.io/devices/> .

Why is it cut off? And how can I avoid this? Is there an LC keyword, like
"effective" or "working", that I should be including.... if so, how?

Thanks.

--
Nicolas Cueto