It looks like Lilypond is giving the wrong output here:
{
\time 3/4
c'4. c'8 d' e'
}
The three eighth notes are grouped together. I have no idea why this should happen, because they aren't triplets. If the time signature were 6/8 then it might make sense, but otherwise I can't imagine why.
I guess there isn't any "right" or "wrong" way to group 8th notes, but this is a strange choice for the default. I'm using version 2.6.5.1.