Tie not rendering properly across volta alternatives

[Peter X]

Hi everyone,

I’ve encountered what appears to be a rendering issue with ties when using
\repeat volta and \alternative endings in LilyPond 2.24.4.

Below is a minimal example that illustrates two problems:

lilypond```

\version "2.24.4"

\fixed c' {
  \time 4/4

  r2. g8 a8 ~ |
  % ✅ This tie displays correctly — connects to the start of the repeat.

  \repeat volta 2 {

    a2. c8 d8 ~ | % ✅ This tie displays correctly

    \alternative {

      \volta 1 {
        d2. b8 a8 ~ \bar ":|."
        % ❌ This tie is not displayed.
        % It should visually tie back to the start of the repeat block
(i.e., the 'a2.').
      }

      \volta 2 {
        d1 |
        % ❌ Missing tie from 'd8~' before the alternatives.
      }

    }
    c1 \bar "|."
  }
}

```

Issue 1: In \volta 1, the tie from a8~ is not shown, even though logically
it should connect to the repeated section’s first note (a2.).

Issue 2: In \volta 2, the d1 is not tied from the d8~ in the bar before the
\alternative, even though musically it is expected.

I understand that some of these rendering behaviors might be due to how
LilyPond internally splits alternatives or handles context. But is there
any way to force these ties to appear visually without resorting to hidden
notes or hacks?

Thanks in advance!

Best regards,
Pt