Problems with trill spanner length

[Lib Lists]

Hi,
I have two problems related to the trill spanner length.

\version "2.22.1"
{
  ees1\startTrillSpan
  \time 3/4
  d2\startTrillSpan d4\startTrillSpan \stopTrillSpan
}

First bar: according to Gould (p. 136) the trill line should stop at
the barline. Is there a way to achieve this?
Second bar: the tril lines overlap. If I remove the time signature
change (\time 3/4), the trill lines are not aligned and I'd wish to
have them on the same line.

Thank you in advance for any help.

Cheers,
Lib