Spacing of dotted notes

[Yuval Harel]

Hi,

I've noticed Lilypond pads dotted notes on the left when shifting them in  
polyphonic contexts.
This seems strange to me. Is this behavior intentional or is this a bug?

\version "2.4.2"
{
    \set Score.timing = ##f
    \clef bass
    << {e8 s4.} \\ {e2} >>
    << {e8 s8 s2} \\ {e2.} >>
    << {e4 s4} \\ {e2} >>
    << {e4 s8} \\ {e2.} >>
    << {e8 s4} \\ {e4.} >>
    << {e4 s8} \\ {e4.} >>
    << {e4 s8} \\ {e1} >>
    << {e4 s8} \\ {e1.} >>
}

Thanks,
        Yuval