Dropdown: Input field text cannot be selected or removed when Markdown is enabled

[JaneSjs]

T16615 - Issue with Dropdown when using Showdown library
https://surveyjs.answerdesk.io/internal/ticket/details/T16615

---

In the meantime, you can disable markdown formatting for Dropdown items. Use the following code:
https://plnkr.co/edit/X8KOzFxL9pDJDHux

var converter = new showdown.Converter();
function processHtml(options){
        var str = converter.makeHtml(options.text);
        str = str.substring(3);
        str = str.substring(0, str.length - 4);
        options.html = str;
}
survey.onTextMarkdown
        .add(function (survey, options) {
            //convert the markdown text to html
            if(options.element.isQuestion && options.element.getType() === "dropdown") {
                if(options.text === options.element.title || options.text === options.element.description){
                   processHtml(options);
                }
           } else {
               processHtml(options);
           }
});