Unicode tags trimming error

[spo0okie]

in some cases all tags from page disappears if it consists urf8 symbols, and reappear if i change tags order
i dont understand meaning of stripping \xe2\x80\x8b and removing /[\x00-\x1F\x7F]/u, but this is root of the problem
syntax/tag.php:

    /**
     * Handle matches of the tag syntax
     *
     * @param string $match The match of the syntax
     * @param int    $state The state of the handler
     * @param int    $pos The position in the document
     * @param Doku_Handler    $handler The handler
     * @return array|false Data for the renderer
     */
    function handle($match, $state, $pos, Doku_Handler $handler) {
        //echo $match: {{tag>bitrix 4 портал опросы }}
        $tags = trim(substr($match, 6, -2));     // strip markup & whitespace
        //echo $tags: bitrix 4 портал опросы
        $tags = trim($tags, "\xe2\x80\x8b"); // strip word/wordpad breaklines
        //echo $tags: bitrix 4 портал опрос.
        //one tag content changed!  ^^^^^^
        $tags = preg_replace(['/[[:blank:]]+/', '/\s+/'], " ", $tags);    // replace linebreaks and multiple spaces with one space character
        //echo $tags: bitrix 4 портал опрос.
        $tags = preg_replace('/[\x00-\x1F\x7F]/u', '', $tags); // strip unprintable ascii code out of utf-8 coded string
        //echo $tags: 
        //ALL TAGS DISSAPEARED ^^^^^^

        if (!$tags) return false;

        // load the helper_plugin_tag
        /** @var helper_plugin_tag $helper */
        if (!$helper = $this->loadHelper('tag')) {
            return false;
        }

        // split tags and returns for renderer
        return $helper->parseTagList($tags);
    }

php version: 7.4
plugin version: 2023-10-17

if i comment out string

        $tags = preg_replace('/[\x00-\x1F\x7F]/u', '', $tags); // strip unprintable ascii code out of utf-8 coded string

then tags just missing one letter:
bitrix 4 портал опрос

if instead (previous string restored) i comment out string

        $tags = trim($tags, "\xe2\x80\x8b"); // strip word/wordpad breaklines

then everything works fine as expected
bitrix 4 портал опросы