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From: =?UTF-8?B?T8SfdXo=?= <oguzismailuysal@gmail.com>
Newsgroups: gnu.bash.bug
Subject: Re: bash loses control of jobs inside a command substitution
Date: Wed, 20 Nov 2019 13:01:41 +0300
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Xref: csiph.com gnu.bash.bug:15616

This seems more like a race condition, see:

    $ f() { ( sleep 0.1; exit 13 ) & "$@"; wait -n; echo $?; }
    $
    $ f sleep 0.0
    [1] 30612
    [1]+  Exit 13                 ( sleep 0.1; exit 13 )
    13
    $ f sleep 0.2
    [1] 30617
    [1]+  Exit 13                 ( sleep 0.1; exit 13 )
    127