`wait -n` returns 127 when it shouldn't

[Aleksey Covacevice]

Configuration Information [Automatically generated, do not change]:
Machine: x86_64
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS: -march=x86-64 -mtune=generic -O2 -pipe -fno-plt
-fexceptions         -Wp,-D_FORTIFY_SOURCE=2 -Wformat
-Werror=format-security         -fstack-clash-protection
-fcf-protection -g
-ffile-prefix-map=/build/bash/src=/usr/src/debug/bash -flto=auto
-DDEFAULT_PATH_VALUE='/usr/local/sbin:/usr/local/bin:/usr/bin'
-DSTANDARD_UTILS_PATH='/usr/bin' -DSYS_BASHRC='/etc/bash.bashrc'
-DSYS_BASH_LOGOUT='/etc/bash.bash_logout'
-DNON_INTERACTIVE_LOGIN_SHELLS
uname output: Linux work 6.0.7-arch1-1 #1 SMP PREEMPT_DYNAMIC Thu, 03
Nov 2022 18:01:58 +0000 x86_64 GNU/Linux
Machine Type: x86_64-pc-linux-gnu

Bash Version: 5.1
Patch Level: 16
Release Status: release

Description:
`wait -n` sometimes returns with status code 127 even though there are
unwaited-for children.

Repeat-By:
The following script does finish after a while:

waitjobs() {
    local status=0
    while true; do
    local code=0; wait -n || code=$?
        ((code == 127)) && break
        ((!code)) || status=$code
    done
    return $status
}

# Eventually finishes:
while true; do (
    true &
    false &
    waitjobs
) && break; done