bash-5.2.002: 'alias' stops working after some commands are executed.

[feng xiangjun]

Hello, all.

I'm running slackware-64 current with
~$ bash --version
GNU bash, version 5.2.2(1)-release (x86_64-slackware-linux-gnu)
Copyright (C) 2022 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>

This is free software; you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

The problem is if some commands are executed, 'alias'  stops working.

How to reproduce it:

~$ printenv LS_OPTIONS
-F -b -T 0 --color=auto
~$ alias
alias ls='/bin/ls $LS_OPTIONS'
alias mc='. /usr/share/mc/bin/mc-wrapper.sh'
~$ echo $(
> ^C
~$ ls                   # This is not the alias 'ls' but the plain
'/bin/ls', in other words, there's not 'color' output.

If you need more info, please let me know. Thanks.