Problem with JetTheme Automatic Table of Contents (Japanese Headings)

The heading "ＢＢＢＢ" jumps to the heading "ＡＡＡＡ" and then to NG.

The headings "testＤ" and "testＦ" also jump to the heading "testＣ" and NG.

"Cause."
This is because "single byte in UTF-8" remain unchanged in the ID of the jump destination, but "multi bytes in UTF-8" are replaced by _ (underscore).

Of course, Japanese is also part of "multi bytes in UTF-8".

[OK]ＡＡＡＡ: https://ataruchi.blogspot.com/2021/12/test-toc.html#__
[NG]ＢＢＢＢ: https://ataruchi.blogspot.com/2021/12/test-toc.html#__

[OK]testＣ: https://ataruchi.blogspot.com/2021/12/test-toc.html#test_
[NG]testＤ: https://ataruchi.blogspot.com/2021/12/test-toc.html#test_
[OK]testＥＥＥ: If the number of "multi-byte characters" is different, success.
https://ataruchi.blogspot.com/2021/12/test-toc.html#test__

[NG]testＦ: https://ataruchi.blogspot.com/2021/12/test-toc.html#test_

_ (Underscore) is replaced by JetTheme JavaScript(version 0.4.8) this part of the above.

                                        [B](/[^\w!?]/g,"_")[B](/__/g,"_")
                                    

If I inline the script and remove this, it works correctly.

ＡＡＡＡ

ＡＡＡＡ(multi bytes in UTF-8)

ＢＢＢＢ

ＢＢＢＢ(multi bytes in UTF-8)

testＣ

test(single byte in UTF-8) + Ｃ(multi bytes in UTF-8)

testＤ

test(single byte in UTF-8) + Ｄ(multi bytes in UTF-8)

testＥＥＥ

test(single byte in UTF-8) + ＥＥＥ(multi bytes in UTF-8)

testＦ

test(single byte in UTF-8) + Ｆ(multi bytes in UTF-8)

最後まで読んでいただき、ありがとうございます。　また、お越しくださいませ。
// アタル