Trying to color the walls

I am trying to color the walls using Display.ByGeometryColor

I see however weird behavior of element selection
First I select all the walls and then I try to color everything

This happens, only some of the wall parts are colored not all: n1
Then if I select the geometry node - I actually get blue on different parts: n2
But if I select the color node then different one is blue: n3

(can only put one image here)
Why it happens randomely?
Shouldnt picture 2 and 3 have the same part colored?

Selecting the nodes will highlight geometry in view, and this highlight happens to be that shade of blue.

Try right clicking on all nodes from the left, and disable the preview. Once you’re at the display.bygeometrycolor node you should see just what you’re after.