JSON Parsing - deadlock/stuck on parsing Json to HTML

Issueに示されているParseメソッドから開始し、提供されたJSON文字列、HtmlFormatter、およびColorCode.Languages.FindByIdのjson言語を使ってハングを再現します。コンパイルされた言語の正規表現をregexMatch.NextMatch()まで追跡し、解析が停止することなく完了し、それでも期待されるHTML出力が生成されることを確認します。

Im trying to parse this JSON sipped to my Blazor page. But because of some weird RegEx parsing issue the process get stuck without any Exception. Can somebody tell me where there could be a Problem?
here you can find my test project: ColorCodeTest

This is my Test Code

string _jsonString3 = "{\r\n \"raw_causes\": [\r\n      \"Winterglatter Fahrbahn\",\r\n      \"Nicht angepasste Geschwindigkeit\",\r\n      \"test3\"\r\n    ]\r\n      }";
try
{
    var _formatter = new HtmlFormatter();
    var language = ColorCode.Languages.FindById("json");
    _jsonHtml = _formatter.GetHtmlString(_jsonString3, language);

}
catch (Exception)
{

    throw;
}

It stuck after the array Element \"Winterglatter Fahrbahn\", when it call regexMatch = regexMatch.NextMatch(); and I have no idear why this happends

        private void Parse(string sourceCode,
                           CompiledLanguage compiledLanguage,
                           Action<string, IList<Scope>> parseHandler)
        {
            Match regexMatch = compiledLanguage.Regex.Match(sourceCode);

            if (!regexMatch.Success)
                parseHandler(sourceCode, new List<Scope>());
            else
            {
                int currentIndex = 0;

                try
                {
                    while (regexMatch.Success)
                    {
                        string sourceCodeBeforeMatch = sourceCode.Substring(currentIndex, regexMatch.Index - currentIndex);
                        if (!string.IsNullOrEmpty(sourceCodeBeforeMatch))
                            parseHandler(sourceCodeBeforeMatch, new List<Scope>());

                        string matchedSourceCode = sourceCode.Substring(regexMatch.Index, regexMatch.Length);
                        if (!string.IsNullOrEmpty(matchedSourceCode))
                        {
                            List<Scope> capturedStylesForMatchedFragment = GetCapturedStyles(regexMatch, regexMatch.Index, compiledLanguage);
                            List<Scope> capturedStyleTree = CreateCapturedStyleTree(capturedStylesForMatchedFragment);
                            parseHandler(matchedSourceCode, capturedStyleTree);
                        }

                        currentIndex = regexMatch.Index + regexMatch.Length;
                        regexMatch = regexMatch.NextMatch();
                    }
                }
                catch (Exception ex)
                {

                    throw;
                }

                string sourceCodeAfterAllMatches = sourceCode.Substring(currentIndex);
                if (!string.IsNullOrEmpty(sourceCodeAfterAllMatches))
                    parseHandler(sourceCodeAfterAllMatches, new List<Scope>());
            }
        }