percent repeat issue

[Vaylor Trucks]

I'm seeing an issue if I change time signatures during a percent repeat.

Let's start with a 3 bar snare drum phrase

\version "2.22.0"
snareline = \drummode
{
  \time 3/8 sn8[ sn sn]
  \time 2/4 sn8[ sn sn sn]
  \time 4/4 sn8[ sn sn sn] sn[ sn sn sn]
}
\score
{ << \new DrumStaff << \snareline >> >> }

If I decide to do a percent repeat of the first 2 bars, Lilypond returns an
error

\version "2.22.0"
snareline = \drummode
{
  \repeat percent 2 {
  \time 3/8 sn8[ sn sn]
  \time 2/4 sn8[ sn sn sn]  }
  \time 4/4 sn8[ sn sn sn] sn[ sn sn sn]
}
\score
{ << \new DrumStaff << \snareline >> >> }

At the beginning of the 4/4 bar, I get

warning: mid-measure time signature without \partial


If I make the two bars into one 7/8 bar there's no issue.